ClusMetric - distortion 1.90271e+06 1 12 Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Epping, New South Wales, Australia 179 Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Epping, New South Wales, Australia 72 Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Sydney, Australia 8 Commonwealth Scientific and Industrial Research Organization, Epping, New South Wales, Australia 3 Commonwealth Scientific and Industrial Research Organization, Div. of Applied Physics, Lindfield, New South Wales, Australia 2 Commonwealth Scientific and Industrial Research Organization, Radiophysics Div., Epping, New South Wales, Australia 1 Commonwealth Scientific and Industrial Research Organization, Div., of Radiophysics, Epping, New South Wales, Australia 1 Commonwealth Scientific and Industrial Research Organization, Div. of Radiopphysics, Epping, New South Wales, Australia 1 Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Parker, New South Wales, Australia 1 Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Melbourne, Australia 1 Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Epping, New South Wales Australia 1 Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Canberra, Australia 1 Commonwealth Scientific and Industrial Research Organisation, Div. of Radiophysics, Epping, New South Wales, Australia 2 15 Commissariat a l'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, Essonne, France 76 Commissariat a l'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, Essonne, France 11 Commissariat al'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, Essonne, France 9 Commissariat a l'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, Essonne 3 Commissariat al'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, Essonne 3 Commissariat a l'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, Seine-et-Oise, France 2 Commissariat a l'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, Seine-et-Oise 1 Commissariat al'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yuette, Essonne, France 1 Commissariat a l'Energie Atomique, Centre de Saclay, Gif-sur-Yvette, Essonne, France 1 Commissariat a l'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, Hauts-de-Seine, France 1 Commissariat a l'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, France 1 Commissariat a l'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, Gif-Sur-Yvette, Essonne, France 1 Commissariat a l'Energie Atomique, Centre d'Etudes Nucleaires de Saclay Gif-sur-Yvette, Essonne, France 1 Commissariat a l'Energie Atomique Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, Essonne, France 1 Commissariat a L'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, Essonne, France 1 Commisariat a l'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, Essonne, France 3 14 Kiel, Universitaet, Institut fuer theoretische Physik und Sternwarte, Federal Republic of Germany 29 Kiel, Universitaet, Institut fuer theoretische Physik und Sternwarte, Federal Republic of Germany 29 Kiel, Neue Universitaet, Institut fuer theoretische Physik und Sternwarte, Kiel, West Germany 24 Kiel, Universitaet, Institut fuer Theoretische Physik und Sternwarte, Federal Republic of Germany 21 Kiel, Universitaet, Institut fuer theoretische Physik und Sternwarte, West Germany 15 Kiel, Neue Universitaet, Institut fuer Theoretische Physik und Sternwarte, Kiel, West Germany 11 Kiel, Universitaet, Institut fuer Theoretische Physik und Sternwarte, West Germany 10 Kiel, Universitaet, Institut fuer theoretische Physik und Sternwarte, Kiel, West Germany 7 Kiel, Universitaet, Institut fuer Theoretische Physik und Sternwarte, Kiel, West Germany 1 Kiel, Universitaet, Institute fuer theoretische Physik und Sternwarte, West Germany 1 Kiel, Universitaet, Institut fuer theoretische Physik, Federal Republic of Germany 1 Kiel, Universitaet, Institut fuer Theoretische Physik and Sternwarte, Kiel, West Germany 1 Kiel, Neue Universitaet, Institut fuer theoretische physik und Sternwarte, Kiel, West Germany 1 Kiel, Institut fuer Theoretische Physik und Sternwarte, Federal Republic of Germany 1 Kiel Universitaet, Institut fuer Theoretische Physik und Sternwarte, Kiel, West Germany 4 17 Universitaets-Sternwarte, Goettingen, Federal Republic of Germany 69 Universitaets-Sternwarte, Goettingen, Federal Republic of Germany 60 Hamburger Sternwarte, Hamburg, Federal Republic of Germany 21 Universitaets-Sternwarte, Munich, Federal Republic of Germany 18 Bonn, Universitaet, Sternwarte, Federal Republic of Germany 13 Universitaets-Sternwarte, Bonn, Federal Republic of Germany 7 Universitaets-Sternwarte, Jena, Federal Republic of Germany 7 Remeis-Sternwarte, Bamberg, Federal Republic of Germany 6 Muenchen, Universitaets-Sternwarte, Munich, Federal Republic of Germany 6 Bonn, Universitaets-Sternwarte, Federal Republic of Germany 2 Universitaetssternwarte, Goettingen, Federal Republic of Germany 2 Remeis Sternwarte, Bamberg, Federal Republic of Germany 1 Wilhelm-Foerster-Sternwarte, Berlin, Federal Republic of Germany 1 Universitats-Sternwarte, Gottingen, Federal Republic of Germany 1 Universitaets Sternwarte, Bonn, Federal Republic of Germany 1 Muenchen, Universitaetssternwarte, Munich, Federal Republic of Germany 1 Muenchen, Universitaet, Sternwarte, Munich, Federal Republic of Germany 1 Kiel, Universitaets-Sternwarte, Federal Republic of Germany 5 12 Max-Planck-Institut fuer extraterrestrische Physik, Garching, Federal Republic of Germany 335 Max-Planck-Institut fuer Physik und Astrophysik, Garching, Federal Republic of Germany 87 Max-Planck-Institut fuer extraterrestrische Physik, Garching, Federal Republic of Germany 82 Max-Planck-Institut fuer Extraterrestrische Physik, Garching, Federal Republic of Germany 33 Max-Planck-Institut fuer Astrophysik, Garching, Federal Republic of Germany 5 Max-Planck-Institut fuer Plasmaphysik, Garching, Federal Republic of Germany 3 Max-Planck-Institut fuer extraterrestrische Physik, Munich, Federal Republic of Germany 2 Max-Planck-Institut fuer Extraterrestrische Physik, Munich, Federal Republic of Germany 1 Max-Planck-Institut fuer extraterrestrusche Physik, Garching, Federal Republic of Germany 1 Max-Planck-Institut fuer extraterrestrische Physik, Federal Republic of Germany 1 Max-Planck-Institut fuer Quantenoptik, Garching, Federal Republic of Germany 1 Max-Planck Institut fuer Physik und Astrophysik, Garching, Federal Republic of Germany 1 Max Planck Institute for Extraterrestrial Physics, Garching, Federal Republic of Germany 6 90 Max-Planck-Inst. fuer Extraterrestrische Physik, Garching, Germany 185 Max-Planck-Inst. fuer Extraterrestrische Physik, Garching, Germany 84 Max-Planck-Inst. fuer Physik und Astrophysik, Garching, Germany 75 Max-Planck-Institut fuer extraterrestrische Physik, Garching, West Germany 45 Max-Planck-Institut fuer Extraterrestrische Physik, Garching, Germany 37 Max-Planck-Institut fuer Astrophysik, Garching, Germany 21 Max-Planck-Institut fuer Extraterrestrische Physik, Garching, West Germany 17 Max-Planck-Institut fuer extraterrestrische Physik, Garching, Germany 15 Max-Planck-Inst. fuer extraterrestrische Physik, Garching, Germany 14 MPI fuer Extraterrestrische Physik, Garching, Germany 13 Max-Planck-Inst. fuer Astrophysik, Garching, Germany 10 Max-Planck-Inst. fuer extraterrestrische Physik, Germany 9 Max-Planck-Institut fuer extraterrestrische Physik, Muenchen, Germany 8 Max-Planck Institut fuer extraterrestrische Physik, Garching, Germany 8 Max-Planck Institut fuer Astrophysik, Garching, Germany 7 Max-Planck-Inst. fuer extraterrestrische Physik, Muenchen, Germany 7 Max-Planck-Inst. fuer Extraterrestrische Physik, Germany 7 Max-Plack-Institut fur Extraterrestrische Physik, Garching, Germany 6 Max-Planck-Institut fur extraterrestrische Physik, Garching, West Germany 6 Max-Planck-Institut fur Extraterrestrische Physik, D-85740 Garching, Germany 6 Max-Planck-Institut fuer Extraterrestrische, Garching, Germany 5 Max-Planck-Inst. fur extraterrestrische Physik, Giessenbachstrasse, German 5 Max-Planck Inst. fuer Extraterrestrische Physik, Garching, Germany 5 Max Planck Inst. fuer Extraterrestrische Physik, Garching, Germany 5 MPI fuer Extraterrestrische Physik, Munchen, Germany 4 Max-Planck-Institut fur extraterrestrische Physik, 85740 Garching, Germany 4 Max-Planck-Institut fuer extraterrestrische Physik, Garching 4 Max-Planck-Institut fuer Extraterrestriche Physik, Garching, Germany 4 Max-Planck-Inst. fuer Extraterrestriche Physik, Muenchen, Germany 4 Max-Planck Institute fuer Extraterrestriche Physik, Garching, Germany 4 Max-Planck Institut fuer extraterrestriche Physik, Garching, Germany 4 Max-Planck Institut fuer Extraterrestrische, Garching, Germany 4 Max Planck Institute for Extraterrestrial Physics, Garching, Germany 4 Max Planck Inst. fuer Extraterrestrische Physik, Garching, Muenchen, Germany 3 Max-Planck-Institut fur extraterrestrische Physik, D-85740 Garching, Germany 3 Max-Planck-Institut fuer Extraterrestrische Physik, Muenchen, Germany 3 Max-Planck-Institut fuer Astrophysick, Garching, Germany 3 Max-Planck-Inst. fuer Extraterrestrische Physik, Muenchen, Germany 2 Max-Planck-Institute fuer Astrophysik, Garching, Germany 2 Max-Planck-Institut fur extraterrestrische Physik, 8046 Garching, Germany 2 Max-Planck-Institut fuer extraterrestrische Physik, Munich, West Germany 2 Max-Planck-Institut fuer Extraterrestrische, Germany 2 Max-Planck-Institut fuer Extraterrestrische Physik, Germany 2 Max-Planck-Institut fuer Extraterrestrische Physik, Garching 2 Max-Planck-Institut fuer Extra Terrestrische Physik, Munchen, Germany 2 Max-Planck-Inst. fuer Extraterrestrische Physick, Garching, Germany 2 Max-Planck-Insitut fuer Astrophysik, Garching, Germany 2 Max Planck Institut fuer extraterrestrische Physik, Germany 2 Max Planck Institut fuer Astrophysik, Garching, Germany 1 Max-Planck-Institute fur extraterrestrische Physik, Garching, West Germany 1 Max-Planck-Institute fur Extraterrestrische Physik, 85740 Garching, Germany 1 Max-Planck-Institute fuer Exrtraterrestrische Physik, Garching, Germany 1 Max-Planck-Institut fur extraterrestrische Physik, D-85740, Garching, Germany 1 Max-Planck-Institut fur extraterrestrische Physik, 85748 Garching, Germany 1 Max-Planck-Institut fur Extraterrestrische Physik, W-8046 Garching, Germany 1 Max-Planck-Institut fur Extraterrestrische Physik, D85470 Garching, Germany 1 Max-Planck-Institut fur Extraterrestrische Physik (MPE), D-85740 Garching, Germany 1 Max-Planck-Institut fuer extraterrestrische Physik, Garching, West 1 Max-Planck-Institut fuer extraterrestrische Physik, Garching, W 1 Max-Planck-Institut fuer extraterrestrische Physik, Garching, Muenchen, Germ 1 Max-Planck-Institut fuer Extraterristrische Physik, Garching, West Germany 1 Max-Planck-Institut fuer Extraterrestrishe Physik, Garching, West Germany 1 Max-Planck-Institut fuer Extraterrestrishce Physik, Garching, Germany 1 Max-Planck-Institut fuer Extraterrestrische, Physik, Garching, West Germany 1 Max-Planck-Institut fuer Extraterrestrische Physik, Munich, Germany 1 Max-Planck-Institut fuer Extraterrestrische Physik, Garching, West 1 Max-Planck-Institut fuer Extraterrestriche Physik, Garching, West Germany 1 Max-Planck-Institut fuer Extraerrestrische Physik, Garching, Germany 1 Max-Planck-Inst. of Extraterrestrial Physics, Garching, Germany 1 Max-Planck-Inst. fuer Extraterrestrische Physik, Garching 1 Max-Planck-Inst. fuer Extraterrestrische Physik, Berlin, Germany 1 Max-Planck-Inst. fuer Extraterrestrische Physik 1 Max-Planck-Inst fuer Extraterrestrische Physik, Garching, Germany 1 Max-Planck-Inst fuer Astrophysik, Garching, Germany 1 Max-Planck-Insititut fuer Astrophysik, Garching, Germany 1 Max-Planck Instiut fuer Extraterrestrische Physik, Garching, Germany 1 Max-Planck Institut fur extraterrestrische Physik, Garching, West Germany 1 Max-Planck Institut fur Extraterrestrische Physik, D-85740 Garching, Germany 1 Max-Planck Institut fuer extraterrestrische Physik, Garching, West Germany 1 Max-Planck Institut fuer Extraterrestrishce Physik, Muenchen, Germany 1 Max-Planck Inst. fuer extraterrestrische Physik, Garching, Germany 1 Max-Planck Inst. fuer Astrophysik, Garching, Germany 1 Max Planck Institute for Extraterrestrial Physics, 85740 Garching, Germany 1 Max Planck Institut fuer Extraterrestrische Physik, Muenchen, Germany 1 Max Planck Institut fuer Extraterrestrische Physik, Garching, Germany 1 Max Planck Institut fuer Extraterrestriche Physik, Garching, Germany 1 Max Planck Inst. fuer extraterrestrische Physik, Muenchen, Germany 1 Max Planck Inst. for Extraterrestrial Physics, Garching, Germany 1 MPI fuer Extraterrestrische Physik, Muenchen, Germany 1 MPI fuer Extraterrestricshe Physik, Garching, Germany 1 MPI fuer Extraterrestriche Physik, Garching, Germany 7 13 Max-Planck-Institut fuer Aeronomie, Katlenburg-Lindau, Federal Republic of Germany 100 Max-Planck-Institut fuer Astronomie, Heidelberg, Federal Republic of Germany 50 Max-Planck-Institut fuer Aeronomie, Katlenburg-Lindau, Federal Republic of Germany 34 Max-Planck-Institut fuer Kernphysik, Heidelberg, Federal Republic of Germany 7 Max-Planck-Institut fuer Aeronomie, Katlenburg-Lindau, West Germany 5 Max-Planck-Institut fuer Aeronomie, Katlenburg-Lindau, Germany 2 Max-Plank-Institut fuer Astronomie, Heidelberg, Federal Republic of Germany 2 Max-Planck-Institut fuer Chemie, Mainz, Federal Republic of Germany 2 Max-Planck-Institut fuer Astronomie, Bonn, Federal Republic of Germany 1 Max-Planck-Institute fuer Aeronomie, Katlenburg-Lindau, Federal Republic of Germany 1 Max-Planck-Institut fuer Astronomie, Katlenburg-Lindau, Federal Republic of Germany 1 Max-Planck-Institut fuer Astronomie, Heidelberg, Federal Repubilc of Germany 1 Max-Planck-Institut fuer Astronomie, Heidelberg, Federal Repubic of Germany 1 Max Planck Institut fuer Aeronomie, Katlenburg-Lindau, Germany 8 5 European Southern Observatory, Garching, Federal Republic of Germany 338 European Southern Observatory, Garching, Federal Republic of Germany 3 European Southern Observatory, Munich, Federal Republic of Germany 1 European Southern Observatory, Garching, Muenchen, Germany 1 European Southern Observatory, Garching bei Muenchen, West Germany 1 EXOSAT Observatory, Darmstadt, Federal Republic of Germany 9 7 Landessternwarte Koenigstuhl, Heidelberg, Federal Republic of Germany 97 Landessternwarte Koenigstuhl, Heidelberg, Federal Republic of Germany 44 Landessternwarte Koenigstuhl, Heidelberg, Germany 14 Landessternwarte Koenigstuhl, Heidelberg, West Germany 2 Landessternwarte, Koenigstuhl, Heidelberg, West Germany 1 Landessternwarte, Konigstuhl, Heidelberg, Germany 1 Landessternwarte, Koenigstuhl, Heidelberg, Germany 1 Landessternwarte Koenigsstuhl, Heidelberg, Federal Republic of Germany 10 73 Max-Planck-Institut fuer Radioastronomie, Bonn, West Germany 761 Max-Planck-Institut fuer Radioastronomie, Bonn, West Germany 388 Max-Planck-Institut fuer Radioastronomie, Bonn, Federal Republic of Germany 172 Max-Planck-Institut fuer Astronomie, Heidelberg, West Germany 171 Max-Planck-Inst. fuer Radioastronomie, Bonn, Germany 84 Max-Planck-Institut fuer Radioastronomie, Bonn, Germany 70 Max-Planck-Institut fuer Physik und Astrophysik, Munich, West Germany 56 Max-Planck-Institut fuer Kernphysik, Heidelberg, West Germany 54 Max-Planck-Institut fuer Astrophysik, Garching, West Germany 54 Max-Planck-Inst. fuer Astronomie, Heidelberg, Germany 25 Max-Planck-Institut fuer Astronomie, Heidelberg, Germany 22 Max-Planck-Institut fuer Aeronomie, Katlenburg, West Germany 14 Max-Planck-Institut fuer Radioastronomie 13 MPI fuer Radioastronomie, Bonn, Germany 12 Max-Planck-Institut fuer Radioastronomie, Bonn 11 Max Planck Institut fuer Radioastronomie, Bonn, Germany 7 Max-Planck-Institut fur Radioastronomie, Bonn, West Germany 7 Max-Planck-Institut fuer Astrophysik, Munich, West Germany 6 Max-Planck-Inst. fuer Radioastronomie, Bonn 5 Max-Planck-Institut fueu Radioastronomie, Bonn, Germany 5 Max-Planck-Institut fuer Radioastronomie, Federal Republic of Germany 4 Max-Planck-Institute fuer Radioastronomie, Bonn, Germany 4 Max-Planck-Institut fur Astronomie, Heidelberg, West Germany 4 Max-Planck-Institut fuer Physik and Astrophysik, Garching, West Germany 4 Max-Planck-Institut fuer Astronomie, Koenigstuhl, West Germany 4 Max-Planck-Inst. fuer Radioastronomie, Germany 4 Max Planck Inst. fuer Radioastronomie, Bonn, Germany 3 Max-Planck-Institut fuer Physik, Muenchen, Germany 3 Max-Planck Insitituit fuer Astronomie, Heidelberg, Germany 2 Max-Planck-Institut fur Radioastronomie, D-53010 Bonn, Germany 2 Max-Planck-Institut fur Physik und Astrophysik, Munich, West Germany 2 Max-Planck-Institut fuer Radioastronomy, Bonn, West Germany 2 Max-Planck-Institut fuer Radioastronomie, West Germany 2 Max-Planck-Institut fuer Radioastronomie, Bonn, W 2 Max-Planck-Institut fuer Radioastronimie, Bonn, Federal Republic of Germany 2 Max-Planck-Institut fuer Astrophysik, Muenchen, Germany 2 Max-Planck-Institut fuer Astrophysik, Germany 2 Max-Planck-Institut fuer Astronomie, Heidelburg, Germany 2 Max-Planck-Institut fuer Astronomie, Heidelberg 2 Max-Planck-Inst. fuer Radiostronomie, Bonn, Germany 2 Max-Planck Institut fuer Radioastronomie, Bonn, West Germany 1 Max-Plank-Institut fur Radioastronomie, Bonn, West Germany 1 Max-Plank-Institut fuer Astronomie, Heidelberg, West Germany 1 Max-Planck-Institute fuer Radioastronomie, Bonn, West Germany 1 Max-Planck-Institute fuer Astronomie, Heidelburg, Germany 1 Max-Planck-Institute fuer Astronomie, Heidelberg, West Germany 1 Max-Planck-Institut, Garching, West Germany 1 Max-Planck-Institut fur Radioastronomie, Bonn, Germany 1 Max-Planck-Institut fur Radioastronomie, Bonn, Federal Republic of Germany 1 Max-Planck-Institut fur Astronomie, Heidelberg, Germany 1 Max-Planck-Institut fur Aeronomie, Katlenburg, West Germany 1 Max-Planck-Institut fuer Radiostronomie, Bonn, West Germany 1 Max-Planck-Institut fuer Radioastronomie, Bonn, West Germanuy 1 Max-Planck-Institut fuer Radioastronomie Auf dem Hugel, Bonn, Germany 1 Max-Planck-Institut fuer Radioastromomie, Bonn, Federal Republic of Germany 1 Max-Planck-Institut fuer Physik and Astrophysik, Munich, West Germany 1 Max-Planck-Institut fuer Meteorologie, Hamburg, West Germany 1 Max-Planck-Institut fuer Chemie, Mainz, West Germany 1 Max-Planck-Institut fuer Astrophysik, Muenich, West Germany 1 Max-Planck-Institut fuer Astrophsik, Garching, Germany 1 Max-Planck-Institut fuer Astronomie, Bonn, West Germany 1 Max-Planck-Institut fuer Aeronomie, Lindau, West Germany 1 Max-Planck-Institut fuer Aeronomie, Katlenberg, West Germany 1 Max-Planck-Institut fuer Aeronomie, Heidelberg, West Germany 1 Max-Planck-Instituet fuer Astronomie, Heidelberg, West Germany 1 Max-Planck-Inst. fuer Astronomie, Germany 1 Max-Planck-Inst. fuer Astronomie, Bonn, Germany 1 Max-Planck-Insitut fuer Radioastronomie, Bonn, Germany 1 Max-Planck Institut fuer Radioastronomie, Bonn, Federal Republic of Germany 1 Max-Planck Institut fuer Aeronomie, Katlenburg, West Germany 1 Max-Planck Inst. fuer Radioastronomie, Bonn, Germany 1 Max-Planck Inst. fuer Astronomie, Heidelberg, Germany 1 Max Planck-Institut fuer Kernphysik, Heidelberg, West Germany 1 Max Planck Inst. fuer Astronomie, Heidelberg, Germany 11 23 Kiepenheuer-Institut fuer Sonnenphysik, Freiburg im Breisgau, West Germany 48 Kiepenheuer-Institut fuer Sonnenphysik, Freiburg im Breisgau, West Germany 41 Kiepenheuer-Institut fuer Sonnenphysik, Freiburg im Breisgau, Federal Republic of Germany 14 Kiepenheuer-Inst. fuer Sonnenphysik, Freiburg, Germany 14 Kiepenheuer-Inst. fuer Sonnenphysik, Freiburg im Breisgau, Germany 6 Kiepenheuer-Institut fuer Sonnenphysik, Freiburg, Germany 5 Kiepenheuer Institut fuer Sonnenphysik, Freiburg im Breisgau, West Germany 3 Kiepenheuer-Institut fuer Sonnephysik, Freiburg, Germany 3 Kiepenheuer-Institut fuer Sonnenphysik, Freiburg-im-Breisgau, West Germany 2 Kiepenheuer Institut fuer Sonnenphysik, Freiburg im Breisgau, Federal Republic of Germany 2 Keipenheuer-Institut fuer Sonnephysik, Freiburg, Germany 1 Kipenheuer-Institut fuer Sonnenphysik, Freiburg im Breisgau, Federal Republic of Germany 1 Kiepenheur-Institut fuer Sonnenphysik, Freiburo im Breisqau, West Germany 1 Kiepenheur-Institut fuer Sonnenphysik, Freiburg im Breisgau, West Germany 1 Kiepenheuerinstitut fuer Sonnenphysik, Freiburg im Breisgau, West Germany 1 Kiepenheuer-Institute fuer Sonnenphysik, Freiburg, Germany 1 Kiepenheuer-Institut, fuer Sonnenphysik, Freiburg im Breisgau, West Germany 1 Kiepenheuer-Institut fur Sonnenphysik, Freiburg im Breisgau, West Germany 1 Kiepenheuer-Institut fuer Sonnephysik, Freiburg im Breisgau, West Germany 1 Kiepenheuer-Institut fuer Sonnenphysik, Frieburg im Breisgau, Federal Republic of Germany 1 Kiepenheuer-Institut fuer Sonnenphysik, Freiburg, Federal Republic of Germany 1 Kiepenheuer-Institut fuer Sonnenphysik, Freiburg im Briesgau, Federal Republic of Germany 1 Kiepenheuer-Institut fuer Sonnenphysik, Freiburg im Breisgall, West Germany 1 Kiepenheuer - Institut fuer Sonnenphysik, Freiburg im Breisgau, West Germany 12 21 U.S. Navy, E. O. Hulburt Center for Space Research, Washington, DC 371 U.S. Navy, E. O. Hulburt Center for Space Research, Washington, DC 166 U.S. Navy, E. O. Hulburt Center for Space Research, Washington, D.C. 61 U.S. Navy, E.O. Hulburt Center for Space Research, Washington, DC 40 U.S. Navy, E.O. Hulburt Center for Space Research, Washington 8 U.S. Navy, E. O. Hulbert Center for Space Research, Washington, DC 7 U.S. Navy, E. O. Hulbert Center for Space Research, Washington, D.C. 5 E. O. Hulburt Center for Space Research, NRL, Washington, DC, US 4 U.S. Navy, E.O. Hulburt Center for Space Research, Washington, D.C. 4 E. O. Hulburt Center for Space Research, Washington, DC 4 E. O. Hulbert Center for Space Research, NRL, Washington, DC, US 2 U.S. Navy, E. O. Hulburt Center for Space Research 2 E.O. Hulburt Center for Space Research, Washington, DC, US 1 U.S.Navy, E. O. Hulburt Center for Space Research, Washington, DC 1 U.S. Navy, O.E. Hulburt Center for Space Research, Washington, DC 1 U.S. Navy, G. E. O. Hulburt Center for Space Research, Washington, DC 1 U.S. Navy, F. O. Hulburt Center for Space Research, Washington, D.C. 1 U.S. Navy, E. O. Hulburt Center for Space Research, Wasshington, DC 1 U.S. Navy, E. O. Hulburt Center for Space Research, Washingon, DC 1 U.S. Navy, E. O. Hulburt Center for Space Research, Washing on, D.C. 1 U.S. Navy, E. O Hulburt Center for Space Research, Washington, DC 1 E. O. Hulbert Center for Space Research, Washington, DC, US 13 5 Rio Grande do Sul, Universidade Federal, Porto Alegre, Brazil 52 Rio Grande do Sul, Universidade Federal, Porto Alegre, Brazil 17 Rio Grande do Sul, Univ. Federal, Porto Alegre, Brazil 3 Rio Grande do Norte, Universidade Federal, Natal, Brazil 2 Rio Grande do Sul, Universidade Federal, Porto Alegre 1 Rio Grande do Sul, Universidade, Federal, Porto Alegre, Brazil 14 14 Centre d'Etude Spatiale des Rayonnements, Toulouse, France 133 Centre d'Etude Spatiale des Rayonnements, Toulouse, France 6 Centre d'Etudes Spatiales des Rayonnements, Toulouse, France 6 Centre d'Etude spatiale des Rayonnements, Toulouse, France 4 Centre d'Etude Spatiale des Rayonnements CNRS, Toulouse, France 4 Centre d'Etude Spatiale des Rayonhnements, Toulouse, France 3 Centre d'Etude Spatiale de Rayonnements, Toulouse, France 2 Centre d'Etude Spatiale des Rayonnements, France 2 CNRS, Centre d'Etude Spatiale des Rayonnements, Toulouse, France 1 Centre d'Etudes Spatiale des Rayonnements, Toulouse, France 1 Centre d'Etude Spatiale du Rayonnement, Toulouse, France 1 Centre d'Etude Spatiale du Rayonnement, Toulouse Cedex, France 1 Centre d'Etude Spatiale des Rayonnments, Toulouse, France 1 Centre d'Etude Spatiale des Rayonnements, Toulouse 1 CNRS, Centre d'Etude Spatiale des Rayonnements, Toulouse, Fance 15 14 Polska Akademia Nauk, Centrum Astronomiczne, Warsaw, Poland 100 Polska Akademia Nauk, Centrum Astronomiczne, Warsaw, Poland 28 Polska Akademia Nauk, Centrum Astronomiczne, Torun, Poland 6 Polska Akademia Nauk, Centrum Badan Kosmicznych, Warsaw, Poland 3 Polska Akademia Nauk, Instytut Astronomiczny, Warsaw, Poland 2 Polska Akademia Nauk, Instytut Chemii Fizycznej, Warsaw, Poland 2 Polska Akademia Nauk, Centrum Badan Kosmicznych, Wroclaw, Poland 1 Polska-Akademia Nauk, Centrum Astronomiczue, Torun, Poland 1 Polska Akademia Nauk, Instytut Chemii Fizyczney, Warsaw, Poland 1 Polska Akademia Nauk, Instytut Astronomiczny, Torun, Poland 1 Polska Akademia Nauk, Instytut Astronomiczmy, Warsaw, Poland 1 Polska Akademia Nauk, Centrum Badan Kosmicznykh Warsaw, Poland 1 Polska Akademia Nauk, Centrum Astronomiczne, Wasraw, Poland 1 Polska Akademia Nauk, Centrum Astronomiczne, Warszawa, Poland 1 Polska Akademia Nauk Centrum Astronomiczne, Warsaw, Poland 16 13 NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt 99 NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, Md. 95 NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, MD 84 NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt 8 NASA, Goddard Space Flight Center, Laboratory for Planetary Atmospheres, Greenbelt, MD 2 NASA, Goddard Space Flight Center, Laboratory for Planetary Atmospheres, Greenbelt, Md. 2 NASA, Goddard Space Flight Center, Laboratory for Extraterrestrial Physics, Greenbelt 1 Nasa, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, Md. 1 NASA, Goddard Space Flight Center, Laboratory of High Energy Astrophysics, Greenbelt, Md. 1 NASA, Goddard Space Flight Center, Laboratory for Solar Physics and Astrophysics, Greenbelt 1 NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics 1 NASA, Goddard Space Flight Center Laboratory for High Energy Astrophysics, Greenbelt, MD 1 NASA, Goddard Space Flight Center Laboratory for High Energy Astrophysics, Greenbelt 1 NASA, Godard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, MD 17 12 CNRS, Laboratoire de Physique Stellaire et Planetaire, Verrieres-le-Buisson, Essonne, France 63 CNRS, Laboratoire de Physique Stellaire et Planetaire, Verrieres-le-Buisson, Essonne, France 27 CNRS, Laboratoire de Physique Stellaire et Planetaire, Verrieres-le-Buisson, France 2 CNRS, Laboratoire de Physique Stellaire et Planetaire, Verrieres-Le-Buisson, Essonne, France 1 CNRS, Laboratorie de Physique Stellaire et Planetaire, Verrieres-le-Buisson, Essonne, France 1 CNRS, Laboratoire de Physique Stellaire et Planetaire, Verriers-le-Buisson, France 1 CNRS, Laboratoire de Physique Stellaire et Planetaire, Verrieres-le-Buissson, France 1 CNRS, Laboratoire de Physique Stellaire et Planetaire, Verrieres-le-Buisson, Essone, France 1 CNRS, Laboratoire de Physique Stellaire et Planetaire, Verrieres-le-Buisson France 1 CNRS, Laboratoire de Physique Stellaire et Planetaire, Verriees-le-Buisson, Essonne, France 1 CNRS, Laboratoire de Physique Stellaire et Planetaire Verrieres-le-Buisson, Essonne, France 1 CNRS, Laboratoire de Physique Satellaire et Planetaire, Verrieres le Buisson, France 1 CNRS Laboratoire de Physique Stellaire et Planetaire, Verrieres-le-Buisson, Essonne, France 18 23 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, Md. 173 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, MD 89 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, Md. 29 NASA, Goddard Space Flight Center, Laboratory for Extraterrestrial Physics, Greenbelt, Md. 26 NASA, Goddard Space Flight Center, Laboratory for Solar Physics and Astrophysics, Greenbelt, Md. 26 NASA, Goddard Space Flight Center, Laboratory for Extraterrestrial Physics, Greenbelt, MD 14 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt 2 NASA, Goddard Space Flight Center, Labortory for Astronomy and Solar Physics, Greenbelt, MD 2 NASA, Goddard Space Flight Center, Laboratory for Astrophysics and Solar Physics, Greenbelt, MD 1 NASA, Goddard Space Flignt Center, Laboratory for Solar Physics and Astrophysics, Greenbelt, Md. 1 NASA, Goddard Space Flight Center, Laboratory, for Astronomy and Solar Physics, Greenbelt, MD 1 NASA, Goddard Space Flight Center, Laboratory of Astronomy and Solar Physics, Greenbelt, MD 1 NASA, Goddard Space Flight Center, Laboratory for Solar Physics, Greenbelt, Md. 1 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Space Physics, Greenbelt, Md. 1 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Space Physics, Greenbelt, MD 1 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Tucson, Ariz. 1 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Tucson, AZ 1 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics 1 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Astrophysics, Greenbelt, Md. 1 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Astrophysics, Greenbelt, MD 1 NASA, Goddard Space Flight Center Laboratory for Astronomy and Solar Physics, Greenbelt, MD 1 NASA, Goddar Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, MD 1 NASA, Godard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, MD 1 NASA Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, Md. 19 7 Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT 34 Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT 30 Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK 9 Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT 1 Dept. of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK 1 Department of Physics and Astronomy, UCL, Gower Street, London WC1E 6BT 1 Department of Physics & Astronomy, University College London, London WC1E 6BT 1 Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK 20 12 Haute-Provence, Observatoire, Saint-Michel-l'Observatoire, France 57 Haute-Provence, Observatoire, Saint-Michel-l'Observatoire, France 9 Haute Provence, Observatoire, Saint-Michel-l'Observatoire, France 6 Haute-Provence, Observatoire, St.-Michel-l'Observatoire, France 6 Haute-Provence, Observatoire, Saint-Michel l'Observatoire, France 3 Haute Provence, Observatoire, St.-Michel-l'Observatoire, France 2 Haute-Provence Observatoire, Saint-Michel-l'Observatoire, France 1 Haute-Provence, Observatoire, Saint-Michel-l'Observatoire, Basses-Alpes, France 1 Haute-Provence, Observatoire, Saint-Michel-l'Observatoire, Alpes-de-Haute-Provence 1 Haute-Provence Observatoire, Saint-Michel l'Observatoire, France 1 Haute-Provence Observatoire, Saint-Michel de l'Observatoire, France 1 Haute-Provence Observatoire, Saint-Michel L'Observatoire, France 1 Haute Provence, Observatoire, Saint-Michel-L'Observatoire, Alpes-de-Haute-Provence 21 12 CNRS, Laboratoire d'Astronomie Spatiale, Marseille, France 94 CNRS, Laboratoire d'Astronomie Spatiale, Marseille, France 18 CNRS, Lab. d'Astronomie Spatiale, Marseille, France 5 Laboratoire d'Astronomie spatiale du CNRS, Marseille, France 5 CNRS, Laboratoire d'Astronomie Spatiale 3 Lab. d'Astronomie Spatiale du CNRS, Marseille, France 1 Laboratorie d'Astronomie Spatiale, Marseille, France 1 Laboratoire d'Astronomie Spatiale, Marseille, France 1 CNRS, Laboratoire d'Astronomie Spatiale, Marseilles, France 1 CNRS, Laboratoire d'Astronomie Spatiale, France 1 CNRS, Laboratoire d'Aerothermique, Meudon, France 1 CNRS, Laboratoire D'Astronomie Spatiale, Marseille, France 1 CNRS, Lab. d'Astronomie Spatiale, France 22 27 Meudon, Observatoire, Meudon, Hauts-de-Seine, France 915 Paris, Observatoire, Meudon, France 478 Meudon, Observatoire, Meudon, Hauts-de-Seine, France 351 Paris, Observatoire, Meudon, Hauts-de-Seine, France 49 Meudon, Observatoire, Meudon, Hauts-de-Seine 20 Observatoire de Meudon, Meudon, France 14 Paris, Observatoire, Meudon, Hauts-de-Seine 7 Meudon Observatoire, Meudon, Hauts-de-Seine, France 4 Meudon, Observatoire, Paris, France 3 Paris VII, Universite, Meudon, Hauts-de-Seine, France 2 Observatoire de Haute-Provence, France 2 Meudon, Observatorie, Meudon, Hauts-de-Seine, France 2 Meudon, Observatoire, Meudon, Haute-de-Seine, France 2 Meudon, Observatoire, Meudon, France 2 DAEC, Observatoire de Meudon, Meudon, 92195, France 1 Paris, Obsrvatoire, Meudon, Hauts-de-Seine, France 1 Paris, Observatoire, Meudon, Hautes-de-Seine, France 1 Paris VI, Universite, Meudon, Hauts-de-Seine, France 1 Paris Observatoire, Meudon, Hauts-de-Seine, France 1 Meudon, Oservatoire, Meudon, Hauts-de-Seine, France 1 Meudon, Observatoire, Meudon, Hauts-de-Seinne, France 1 Meudon, Observatoire, Meudon, Hauts-de-Seine France 1 Meudon, Observatoire Meudon, Hauts-de-Seine, France 1 Meudon, Laboratoire d'Astrophysique, Meudon, Hauts-de-Seine, France 1 Meudon Observatoire, Meudon, Paris VII, Universite, France 1 Meudon Observatoire, Hauts-de-Seine 1 Calern, Observatoire, Saint Vallier-de-Thiey, France 1 CNRS, Groupe de Recherche, Meudon, Hauts-de-Seine, France 23 16 Lyon, Observatoire, Saint-Genis-Laval, Rhone, France 71 Lyon, Observatoire, Saint-Genis-Laval, France 70 Lyon, Observatoire, Saint-Genis-Laval, Rhone, France 5 Lyon, Observatoire, St.-Genis-Laval, France 5 Lyon, Observatoire, Saint-Genis-Laval, Rhone 3 Observatoire de Lyon, St-Genis-Laval, France 3 Observatoire de Lyon, Saint-Genis-Laval, France 3 Lyon, Observatoire, Lyons, France 2 Observatoire de Lyon, Saint-Genis Laval, France 2 Lyon, Observatoire, Saint-Genis, Laval, Rhone, France 1 Lyon, Observatoire, St.-Genis-Laval, Rhone 1 Lyon, Observatoire, Saint-Genis-Laval 1 Lyon, Observatoire, Saint-Genis Laval, France 1 Lyon, Observatoire, Saint Genis-Laval, France 1 Lyon, Observatoire, Sain-Genis-Laval, Rhone, France 1 Lyon Observatoire, Saint-Genis-Laval, Rhone, France 1 Lyon Observatoire, Saint-Genis-Laval, France 24 11 CEA, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, France 72 CEA, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, France 17 Centre d'Etudes de Saclay, Gif-sur-Yvette, France 14 Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, France 3 Centre d'Etudes Nucleaires de Saclay, Gif sur Yvette, France 2 Centre d'Etude Nucleaires de Saclay, Gif-sur-Yvette, France 2 CEA, Service de Physique Theorique de Saclay, Gif-sur-Yvette, France 2 CEA, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette 1 Centre d'Etudes de Saclay, Gif/Yvette, France 1 CNRS, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, France 1 CEA, Centre d'Etudes Nucleaires de Saclay, Gif-Sur-Yvette, France 1 CEA, Centre d'Etudes Nucleaires de Saclay, France 25 17 Scuola Internazionale Superiore di Studi Avanzati, Trieste, Italy 166 Scuola Internazionale Superiore di Studi Avanzati, Trieste, Italy 21 Scuola Internazionale Superiore di Studi Avanzati 12 Scuola Internazionale Superiore di Studi Avanzati, Trieste 8 Trieste, Scuola Internazionale Superiore di Studi Avanzati, Trieste, Italy 5 Scuola Internanazionale Superiore di Studi Avanzati, Trieste, Italy 4 Scuola Internationale Superiore di Studi Avanzati, Trieste, Italy 2 Scuolo Internazionale Superiore di Studi Avanzati, Trieste, Italy 2 Scuola Internazionale Supperiore di Studi Avanzati, Trieste, Italy 1 Trieste, Scuola Internazionale Superiore di Studi Avanzati, Trieste 1 Scuolo Internazionale Superiore di Sudi Avanzati, Trieste, Italy 1 Scuola Internazionale di Studi Avanzati, Trieste, Italy 1 Scuola Internazionale Superiore di Studi Aviazioni, Trieste, Italy 1 Scuola Internazionale Superiore di Studi Avanzati, Italy 1 Scuola Internazionale Superiore de Studi Avanzati, Trieste, Italy 1 Scuola Internazionale Superiore de Studi Avanzati, Trieste 1 Scuola Internazionale Superior di Studi Avanzati, Trieste, Italy 1 Scuola Internazinale Superiore di Studi Avanzati, Trieste, Italy 26 3 Smithsonian Astrophysical Observatory and Harvard College Observatory, Cambridge, Mass. 87 Smithsonian Astrophysical Observatory and Harvard College Observatory, Cambridge, Mass. 1 Smithsonian Astrophysical Observatory, and Harvard College Observatory, Cambridge, Mass. 1 Smithsonian Astrophysical Observatory and Harvard College Observatory 27 11 Carnegie Institution of Washington, Observatories, Pasadena, CA 110 Carnegie Institution of Washington, Washington, DC 82 Carnegie Institution of Washington, Observatories, Pasadena, CA 28 Carnegie Institution of Washington, Washington, D.C. 8 Carnegie Institution of Washington, Pasadena, CA, US 6 Carnegie Institution of Washington, Washington, DC, US 4 Carnegie Institution of Washington, Observatories, La Serena, Chile 1 Carnegie, Institution of Washington, Washington, DC 1 Carnegie Institution, Observatories, Pasadena, CA 1 Carnegie Institution of Washington, Washingon, DC, US 1 Carnegie Institution of Washington, Pasadena, CA 1 Carnegie Inst. of Washington, Observatories, Pasadena, CA 28 13 Canadian Institute for Theoretical Astrophysics, Toronto, Canada 99 Canadian Institute for Theoretical Astrophysics, Toronto, Canada 25 Canadian Inst. for Theoretical Astrophysics, Toronto, Canada 4 Canadian Institute of Theoretical Astrophysics, Toronto, Canada 3 Canadian Institute for Theoretical Astrophysics 3 Canadian Inst. for Theoretical Astrophysics, Canada 2 Canadian Institute for Theoretical Astrophysics, Toronto, Ontario, Canada 2 Canadian Institute for Theoretical Astrophysics, Canada 2 Canadian Institute for Advanced Research, Toronto, Canada 2 Canadian Inst. for Theoretical Astrophysics, Toronto, Ontario, Canada 1 Landau Institute for Theoretical Physics, Moscow, Russia 1 Canadian Institute for Theoretical Astrophysics, University, Toronto, Canada 1 Canadian Institute for Theoretical Astrophysics, Toronto 1 Canadian Inst. for Theoretical Astrophysics, Toronto 29 14 Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Canarias, La Laguna, Spain 62 Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Canarias, La Laguna, Spain 57 Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Andalucia, Granada, Spain 6 Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Andalucia, Granada 5 Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Canarias, La Laguna, S 4 Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Canarias, Tenerife, Spain 4 Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Andalucia 2 Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Andalucia, Granada, Sp 2 Consejo Superior de Investigaciones Cientificas Instituto de Astrofisica de Andalucia, Granada 1 Cosejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Canarias, La Laguna, Spain 1 Consejo Superior de Investigaciones, Cientificas, Instituto de Astrofisica de Andalucia, Granada, Spain 1 Consejo Superior de Investigaciones Cientificas, Instituto de Optica de Valdes, Madrid, Spain 1 Consejo Superior de Investigaciones Cientificas, Instituto de Astronomia y Geodesia, Madrid, Spain 1 Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Anadlucia 1 Consejo Superior de Investigaciones Cientifica s, Instituto de Astrofisica de Canarias, La Lag una, Spain 30 23 Anglo-Australian Observatory, Epping, New South Wales, Australia 259 Anglo-Australian Observatory, Epping, New South Wales, Australia 200 Anglo-Australian Observatory, Epping, Australia 11 Anglo-Australian Observatory, Coonabarabran, Australia 9 Anglo-Australian Observatory, Sydney, Australia 7 Anglo-Australian Observatory, Epping, NSW, Australia 3 Anglo-Australian Observatory, Coonabarabran, New South Wales 2357, Australia 2 Anglo-Australian Observatory, PO Box 296, Epping, New South Wales 2121, Australia 2 Anglo-Australian Observatory, Coonabarabran, NSW 2357, Australia 1 Solar Observatory, Narrabi, New South Wales, Australia 1 Anglo-Australion Observatory, Epping, New South Wales, Australia 1 Anglo-Australian, Observatory, Epping, Australia 1 Anglo-Australian Observatory, PO Box 296, Epping, New South Wales, 2121, Australia 1 Anglo-Australian Observatory, PO Box 296, Epping 2121, Australia 1 Anglo-Australian Observatory, New South Wales, Epping, Australia 1 Anglo-Australian Observatory, New South Wales, Australia 1 Anglo-Australian Observatory, Kensington, New South Wales, Australia 1 Anglo-Australian Observatory, Epping, New South Wales, England 1 Anglo-Australian Observatory, Epping, New S. Wales, Australia 1 Anglo-Australian Observatory, Epping, Aust 1 Anglo-Australian Observatory, Coonabarabran, New South Wales, Australia 1 Anglo-Australian Observatory, Conabarabran, New South Wales 2357, Australia 1 Anglo-Australia Observatory, Epping, Australia 1 Anglo-Astralian Observatory, Epping, New South Wales, Australia 31 14 CSIRO, Div. of Radiophysics, Epping, Australia 89 CSIRO, Div. of Radiophysics, Epping, Australia 6 CSIRO, Div. of Radiophysics, Sydney, Australia 4 CSIRO, Div. of Radio Physics, Epping, Australia 4 CSIRO, Div. of Applied Physics, Sydney, Australia 2 CSIRO, Radiophysics Laboratory, Epping, Australia 2 CSIRO, Radiophysics Div., Epping, Australia 2 CSIRO, Div. of Radiophysics, Epping 1 University of New South Wales, Epping, Australia 1 CSTRO, Div. of Radiophysics, Epping, Australia 1 CSIRO, Div. of Radiophysics, Parkes, Australia 1 CSIRO, Div. of Radiophysics, Canberra, Australia 1 CSIRO, Div. of Chemical Physics, Clayton, Australia 1 CSIRO, Cloud Physics Laboratory, Epping, Australia 1 CSIRO Radiophysics Labs., Epping, NSW, Australia 32 32 Mount Stromlo and Siding Spring Observatories, Canberra, Australia 507 Mount Stromlo and Siding Spring Observatories, Canberra, Australia 70 Mt. Stromlo and Siding Spring Observatory, Canberra, Australia 54 Mt. Stromlo and Siding Spring Observatories, Canberra, Australia 14 Mt. Stromlo and Siding Spring Observatories, Private Bag, Australia 9 Mount Stromlo and Siding Spring Observatories, Weston Creek, Australia 6 Mount Stromlo and Siding Springs Observatories, Canberra, Australia 6 Mount Stromlo and Siding Spring Observatory, Canberra, Australia 6 Mount Stromlo and Siding Spring Observatories, Woden, Australia 6 Mount Stromlo and Siding Spring Observatories 3 Mt. Stromlo and Siding Spring Observatories, Woden, Australia 3 Mount Stromlo and Siding Springs Observatory, Weston Creek, Australia 3 Mount Stromlo and Siding Spring Observatories, Canberra 3 Mount Strolmo and Siding Spring Observatories, Canberra, Australia 2 Mount Stromlo Observatory, Canberra, Australia 1 Siding Spring Observatory, Canberra, Australia 1 Mt. Stromlo and Siding Spring Observatory, Weston, Australia 1 Mt. Stromlo and Siding Spring Observatory, Camberra, Australia 1 Mount-Stromlo and Siding Spring Observatories, Canberra, Australia 1 Mount Stronlo and Siding Spring Observatories, Canberra, Australia 1 Mount Stromlo and Siding String Observatories, Canberra, Australia 1 Mount Stromlo and Siding Springs Observatories, Weston, Australia 1 Mount Stromlo and Siding Springs Observatories, Weston Creek, Australia 1 Mount Stromlo and Siding Springs Obervatories, Weston Creek, Australia 1 Mount Stromlo and Siding Spring Observatory, Canberra 1 Mount Stromlo and Siding Spring Observatories, Weston, Australia 1 Mount Stromlo and Siding Spring Observatories, Weston 1 Mount Stromlo and Siding Spring Observatories, Coonabarabran, Australia 1 Mount Stromlo and Siding Spring Observatories, Canberrra, Australia 1 Mount Stromlo and Siding Spring Observatories, Canberra, Canada 1 Mount Stromlo and Siding Spring Observatories, Canberra Australia 1 Mount Stromlo and Siding Spring Observatoires, Canberra, Australia 1 Mount Stromlo and Siding Spring Obseratories, Canberra, Australia 33 1 Harvard College Observatory and Smithsonian Astrophysical Observatory, Center for Astrophysics, Cambridge, Mass. 72 Harvard College Observatory and Smithsonian Astrophysical Observatory, Center for Astrophysics, Cambridge, Mass. 34 16 Pic-du-Midi et Toulouse, Observatoires, Toulouse, France 51 Pic-du-Midi et Toulouse, Observatoires, Toulouse, France 14 Toulouse, Observatoire, Toulouse, France 8 Pic du Midi et Toulouse, Observatoires, Toulouse, France 4 Pic-du-Midi et Toulouse, Observatoires, Toulouse 4 Pic-du-Midi et Toulouse, Observatoires, Bagneres-de-Bigorre, France 3 Pic-du-Midi et de Toulouse, Observatoires, Toulouse, France 2 Pic-du-Midi et Toulouse, Observatories, Toulouse, France 2 Pic-du-Midi et Toulouse, Observatoire, Toulouse, France 2 Pic du Midi, Observatoire, Toulouse, France 1 Pic-du-Midi, Observatoire, Toulouse, France 1 Pic-du-Midi et Toulouse, Observatoires, Tolouse, France 1 Pic-du-Midi et Toulouse, Observatoires, Bagn 1 Pic du Midi et Toulouse, Observatories, Toulouse, France 1 Pic du Midi et Toulouse, Observatoires, Toulouse 1 Pic du Midi et Toulouse, Observatoires, Bagneres-de-Bigorre, France 1 Pic du Midi et Toulouse Observatoires, Toulouse, France 35 63 Dominion Astrophysical Observatory, Victoria, Canada 373 Dominion Astrophysical Observatory, Victoria, Canada 257 Dominion Astrophysical Observatory, Victoria, British Columbia, Canada 112 National Astronomical Observatory, Mitaka, Japan 63 Dominion Radio Astrophysical Observatory, Penticton, Canada 58 Smithsonian Astrophysical Observatory, Cambridge, MA 26 National Astronomical Observatory, Tokyo, Japan 23 Tartu Astrophysical Observatory, Toravere, Estonia 20 Dominion Astrophysical Observatory, Victoria, BC, Canada 17 Smithsonian Astrophysical Observatory, Cambridge, MA, US 13 Rothney Astrophysical Observatory, Calgary, Canada 11 Crimean Astrophysical Observatory, Nauchny, Ukraine 9 Beijing Astronomical Observatory, Beijing, China 8 National Astronomical Observatory, Mizusawa, Japan 7 Crimean Astrophysical Observatory, Crimea, Ukraine 6 Smithsonian Astrophysical Observatory, Cambridge, Mass. 6 Rothney Astrophysical Observatory, Calgary, Alberta, Canada 6 Dominion Radio Astrophysical Observatory, Penticton, BC, Canada 6 Dominion Astrophysical Observatory, Penticton, Canada 6 Catania Astrophysical Observatory, Catania, Italy 6 Byurakan Astrophysical Observatory, Armenia 6 Asiago Astrophysical Observatory, Italy 6 Arcetri Astrophysical Observatory, Florence, Italy 5 Dominion Astrophysical Observatory, Victoria 5 Climenhaga Observatory, Victoria, Canada 4 Rothney Astrophysical Observatory, Calgary, Alberta 4 National Astronomical Observatory, Sofia, Bulgaria 3 Dominion Astrophysical Observatory, Penticton, British Columbia, Canada 3 Arcetri Astrophysical Observatory, Firenze, Italy 2 Tokyo Astronomical Observatory, Tokyo, Japan 2 Special Astrophysical Observatory, Russia 2 Special Astrophysical Observatory, Pulkovo, Russia 2 Okayama Astrophysical Observatory, Japan 2 Domonion Astrophysical Observatory, Victoria, B.C., Canada 2 Dominion Astrophysical Observatory, NRCC, Victoria, Canada 2 Astrophysical Observatory, Catania, Italy 2 Astrophysical Observatory, Asiago, Italy 2 Abastumani Astrophysical Observatory, Tbilisi, Georgia 1 Vinius Astronomical Observatory, Vilnius, Lithuania 1 Tokyo Astronomical Observatory, Nagano, Japan 1 Tokyo Astronomical Observatory, Mitaka 1 Tokyo Astronmical Observatory, Mitaka, Japan 1 Tartu Astrophysical Observatory, Tartumaa, Estonia 1 Tartu Astrophysical Observatory, Tartu, Estonia 1 Special Astrophysical Observatory, Stavropol, Russia 1 Shaanxi Astronomical Observatory, Lintong, China 1 Rothney Astrophysical Observatory, Calgary 1 Okayama Astrophysical Observatory, Kamogata, Japan 1 National Astronomical Observatory, Ohsawa, Japan 1 National Astronomical Observatory, Mizuswa, Japan 1 National Astronomical Observataory, Mitaka, Japan 1 Main Astronomical Observatory, Pulkovo, Russia 1 Dominion Astropysical Observatory, Victoria, Canada 1 Dominion Astrophysical Observatory, Victoria, British Columbia Canada 1 Dominion Astrophysical Observatory, Victoria, British Columbia 1 Dominion Astrophysical Observatory, Victoria, BC, US 1 Dominion Astrophysical Observatory, Victoria, B.C., Canada 1 Dominion Astrophysical Observatory, NRC of Canada, Victoria, Canada 1 Dominion Astrophysical Observatory 1 Crimean Astrophysical Observatory, Simeiz, Ukraine 1 Byurakan Astrophysical Observatory, Ashtarak, Armenia 1 Byurakan Astrophysical Observatory, Armenian SSR 1 Asiago, Astrophysical Observatory, Padua, Italy 1 Arcetri, Astrophysical Observatory, Florence, Italy 36 25 Nobeyama Radio Observatory, Minamimaki, Japan 128 Nobeyama Radio Observatory, Minamimaki, Japan 27 Nobeyama Radio Observatory, Nagano, Japan 14 Nobeyama Radio Observatory, Minamimaki 10 Nobeyama Radio Observatory, Japan 8 Nobeyama Radio Observatory, Nobeyama, Nagano, Japan 5 Nobeyama Radio Observatory, Minamisaku, Japan 5 Nobeyama Radio Observatory 3 Nobeyama Radio Observatory, Minamimaki, Minamisaku, Japan 2 Toyokawa Observatory, Japan 2 Nobeyama Radio Observatory, Tokyo, Japan 2 Nobeyama Radio Observatory, Nobeyama, Minamisaku, Japan 2 Nobeyama Radio Observatory, Minamisaku, Nagano, Japan 2 Nobeyama Radio Observatory, Minamimaki, Nagano, Japan 1 Planetary Research Observatory, Hino, Tokyo, Japan 1 Nobeyama Solar Radio Observatory, Nobeyama, Nagano, Japan 1 Nobeyama Solar Radio Observatory, Minamimaki, Japan 1 Nobeyama Solar Radio Observatory, Japan 1 Nobeyama Radio Observatory, Nobeyama, Nagano 1 Nobeyama Radio Observatory, Nobeyama, Japan 1 Nobeyama Radio Observatory, Minimasaku, Japan 1 Nobeyama Radio Observatory, Minamisaki, Japan 1 Nobeyama Radio Observatory, Minamisaki 1 Nobeyama Observatory, Minamimaki, Japan 1 National Astronomy Observatory, Mitaka, Japan 1 Dodaira Observatory, Mitaka, Japan 37 13 Royal Greenwich Observatory, Cambridge, United Kingdom 82 Royal Greenwich Observatory, Cambridge, England 71 Royal Greenwich Observatory, Cambridge, United Kingdom 42 Royal Greenwich Observatory, Cambridge, UK 4 Royal Greenwich Observatory, Tenerife, Spain 3 Royal Greenwich Observatory, Cambridge, England, UK 3 Royal Greenwich Observatory, Cambridge 1 Royal Greenwich Observatory, United Kingdom 1 Royal Greenwich Observatory, Santa Cruz, Spain 1 Royal Greenwich Observatory, England, UK 1 Royal Greenwich Observatory, Cambridge, MA 1 Royal Greenwich Observatory, Cambridge, England, GB 1 Royal Greenich Observatory, Cambridge, UK 1 Institute of Astronomy, Cambridge, United Kingdom 38 44 European Southern Observatory, Santiago, Chile 457 European Southern Observatory, Garching, West Germany 280 European Southern Observatory, Santiago, Chile 106 European Southern Observatory, Geneva, Switzerland 86 European Southern Observatory, La Silla, Chile 52 European Southern Observatory, Garching, Germany 15 European Southern Observatory, Santiago de Chile, Chile 14 European Southern Observatory, Muenchen, Germany 9 European Southern Observatory 8 European Southern Observatory, Munchen, Germany 6 Purple Mountain Observatory, Nanjing, China 6 European Southern Observatory, Munich, West Germany 6 European Southern Observatory, Casilla 19001, Santiago 19, Chile 4 European Southern Observatory, La Serena, Chile 4 European Southern Observatory, Hamburg, West Germany 4 European Southern Observatory, Germany 3 Yale Southern Observatory, San Juan, Argentina 3 Mount Laguna Observatory, San Diego, CA 3 European Southern Obsevatory, Garching, Germany 3 European Southern Observatory, La Silla 2 Shanghai Observatory, Shanghai, China 2 European Southern Observatory, Santiago 2 European Southern Observatory, Garching 2 European Southern Observatory, Casilla, Santiago, Chile 2 European Southern Observatory, Casilla, Chile 2 European Southern Observatory Garching, West Germany 1 Vermilion River Observatory, Danville, Ill. 1 Purple Mountain Observatory, Nanjing 1 Lockheed Solar Observatory, Saugus, Calif. 1 European Southern, Observatory, Garching, West Germany 1 European Southern Observtory, Garching, Germany 1 European Southern Observatory, Santiago, Chili 1 European Southern Observatory, Santiago de Chile 1 European Southern Observatory, Munich, Germany 1 European Southern Observatory, La Silla, Santiago, Chile 1 European Southern Observatory, Geneva 1 European Southern Observatory, Garcing, West Germany 1 European Southern Observatory, Garching, Germany, 1 European Southern Observatory, Gar 1 European Southern Observatory, Castilla 19001, Santiago, Chile 1 European Southern Observatory, Casilla 19001, 19 Santiago, Chile 1 European Southern Observatory at La Silla, La Serena, Chile 1 European Southern Observatoroy, Garching, West Germany 1 Eueopean Southern Observatory, Geneva, Switzerland 1 Carnegie Southern Observatory, Las Campanas, Chile 39 77 Yale University Observatory, New Haven, Conn. 118 Yale University, New Haven, CT 85 Yale University Observatory, New Haven, CT 78 University Observatory, St. Andrews, Scotland 69 Yale University Observatory, New Haven, Conn. 56 Royal University Observatory, Lund, Sweden 41 Helsinki, University, Observatory, Helsinki, Finland 38 Yale University, New Haven, Conn. 29 University Observatory, Copenhagen, Denmark 22 Turku University Observatory, Piikkio, Finland 22 Illinois, University, Observatory, Urbana, Ill. 19 Lund, University, Observatory, Sweden 14 Lund University, Observatory, Sweden 13 Ege University Observatory, Izmir, Turkey 13 Copenhagen University Observatory, Tollose, Denmark 13 Copenhagen University Observatory, Denmark 11 Yale University, Observatory, New Haven, Conn. 11 Van Vleck Observatory, Middletown, Conn. 11 Copenhagen University Observatory, Copenhagen, Denmark 10 Turku University Observatory, Turku, Finland 9 Turku University Observatory, Finland 8 Yale University, New Haven, CT, US 6 Ege University Observatory, Bornova, Turkey 5 University Observatory, Oxford, England 5 Ankara University Observatory, Turkey 4 Warsaw University Observatory, Poland 3 Yale University, Observatory, New Haven, CT 3 Yale Uniersity, New Haven, CT, US 3 University Observatory, Tollose, Denmark 3 University Observatory, Istanbul, Turkey 3 Glasgow University Observatory, Glasgow, Scotland 3 Copenhagen, University Observatory, Copenhagen, Denmark 2 Yonsei Univ. Observatory, Seoul, Korea 2 Yale Univ. Observatory, New Haven, CT 2 Wroclaw University Observatory, Wroclaw, Poland 2 Turku, University Observatory, Turku, Finland 2 Turku University, Observatory, Piikkio, Finland 2 Turku University Observatory, Tuorla, Finland 2 Oxford University, Observatory, Oxford, England 2 Glasgow, University Observatory, Scotland 2 Aegean University Observatory, Izmir, Turkey 2 Aegean University Observatory, Bornova, Turkey 1 Yale University, Hew Haven, CT 1 Yale University Observatory, New Haven, CT, US 1 Yale University Observatory, New Haven Conn. 1 Yale University Observatory, New Haven 1 Yale University Observatory, Bethany, Conn. 1 Yale Univ. Observatory, New Haven, CT, US 1 Yale Observatory, New Haven, CT 1 Wroclaw University, Observatory, Poland 1 Wroclaw University Observatory, Poland 1 University, Observatory, St. Andrews, Scotland 1 University, Observatory, Copenhagen, Denmark 1 University Observtory, St. Andrews, Scotland 1 University Observatory, Warsaw, Poland 1 University Observatory, St. Andrews, England 1 Turku University, Observatory, Tuorla, Finland 1 Turku University, Observatory, Finland 1 Turku University Observatory, Pikkio, Finland 1 Turku University Observatory, Piikkio 1 Turku University Observatory, Piikio, Finland 1 Stockholm University Observatory, Sweden 1 Royal University Observatory, Lund 1 Nice, Universite, Observatoire, Nice, France 1 Michigan, University, Observatory, Ann Arbor, Mich. 1 London, University, Observatory, Mill Hill, Middx. 1 Istanbul University Observatory, Turkey 1 Illinois University, Observatory, Urbana, Ill. 1 Helsinki, University, Observatory, Helsinki 1 Helsinki, University Observatory, Helsinki, Finland 1 Helsinki, University Observatory, Helsinki 1 Helsinki, University Observatory, Finland 1 Helsinki University, Observatory, Helsinki, Finland 1 Helsinki University Observatory, Finland 1 Glasgow University Observatory, Scotland 1 Ege University, Observatory, Bornova-Izmir, Turkey 1 Copenhagen University, Observatory, Copenhagen, Denmark 1 Ankara University, Observatory, Turkey 40 51 Russian Academy of Sciences, Moscow, Russia 72 Russian Academy of Sciences, Moscow, Russia 30 Russian Academy of Sciences, Space Research Inst., Moscow, Russia 24 Chinese Academy of Sciences, Beijing, China 9 Russian Academy of Sciences, Physical Inst., Moscow, Russia 7 Hungarian Academy of Sciences, Budapest, Hungary 6 Moscow State Univ., Moscow, Russia 5 University of Moscow, Moscow, Russia 5 Russian Academy of Sciences, Stavropol Territory, Russia 5 Russian Academy of Sciences, Karachai-Circessia, Russia 5 Polish Academy of Sciences, Warsaw, Poland 4 Chinese Academy of Sciences, Kunming, China 4 Academy of Sciences, Moscow, Russia 3 Uzbek Academy of Sciences, Tashkent, Uzbekistan 3 Ukrainian Academy of Sciences, Kiev, Ukraine 3 Russian Academy of Sciences, Physics Inst., Moscow, Russia 3 Russian Academy of Sciences, Inst. of Astronomy, Moscow, Russia 3 Russian Academy of Science, Nizhny Novgorod, Russia 3 RAN, Fizicheskij Inst., Moscow, Russia 2 Russian Academy of Sciences, St. Petersburg, Russia 2 Russian Academy of Sciences, Saint-Petersburg, Russia 2 Russian Academy of Sciences, Physical Institute, Moscow, Russia 2 Russian Academy of Sciences, Nizhny Arkhyz, Russia 2 Russian Academy of Sciences, Astronomical Inst., Moscow, Russia 2 Russian Academy of Science, Niznij Arhyz, Russia 2 Russian Academy of Science, Moscow, Russia 2 Polish Academy of Sciences, Warzawa, Poland 2 Kurchatov Inst., Moscow, Russia 2 Institute of Astronomy, Moscow, Russia 2 Czech Academy of Sciences, Czech Republic 2 Chinese Academy of Sciences, Shanghai, China 2 Bulgarian Academy of Sciences, Sofia, Bulgaria 2 Bulgarian Academy of Sciences 2 Academy of Sciences, Beijing, China 2 Academy of Sciences of Russia, Moscow, Russia 1 Ukranian Academy of Sciences, Kiev, Ukraine 1 Slovak Academy of Sciences, Slovakia 1 Slovak Academy of Sciences, Bratislava, Slovakia 1 Slovak Academy of Science, Czechoslovakia 1 Russian Academy of Sciences, Troitsk, Russia 1 Russian Academy of Sciences, Sankt-Petersburg, Russia 1 Russian Academy of Sciences, Nizhnij Novgorod, Russia 1 Russian Academy of Sciences, Inst. for Astronomy, Moscow, Russia 1 Russian Academy of Scienc, Moscow, Russia 1 Russian Academy Sciences, Moscow, Russia 1 RAN, Fizicheskii Inst., Moscow, Russia 1 Latvian Academy of Sciences, Riga, Latvia 1 Hungarian Academy of Sciences, Gyula, Hungary 1 Chinese Academy of Sciences, Nanjing, China 1 Chinese Academy of Sciences, Graduate School 1 Bulgarian Academy of Sciences, Dept. of Astronomy 1 Astro-Space Center, Moscow, Russia 41 9 National Astronomy and Ionosphere Center, Ithaca, NY 50 National Astronomy and Ionosphere Center, Ithaca, NY 28 National Astronomy and Ionosphere Center, Ithaca, N.Y. 24 National Astronomy and Ionosphere Center 16 National Astronomy and Ionosphere Center, Arecibo, PR 10 National Astronomy and Ionosphere Center, Arecibo, P.R. 3 National Astronomy and Ionosphere Center, Arecibo, Puerto Rico 2 National Astronomy and Ionospheric Center, Arecibo, PR 1 Nat'l Astronomy and Ionosphere Center, Arecibo, Puerto Rico 1 A. National Astronomy and Ionosphere Center, Arceibo, Puerto Rico 42 31 Observatorio Nacional, Rio de Janeiro, Brazil 65 Observatorio Nacional, Rio de Janeiro, Brazil 31 Observatorio Nacional do Brasil, Rio de Janeiro, Brazil 15 Observatorio do Valongo, Rio de Janeiro, Brazil 8 Rio de Janeiro, Observatorio Nacional, Rio de Janeiro, Brazil 7 Observatorio Nacional, Sao Paulo, Brazil 3 CNPq/Observatorio National, Rio de Janeiro, Brazil 2 Observatorio Nacional do Brazil, Rio de Janeiro, Brazil 2 Observatorio Nacional do Brazil, Rio de Janeiro 2 Observatorio Nacional do Brasil, Rio de Janiero, Brazil 2 CNPq-Observatorio Nacional, Rio de Janeiro, Brazil 1 Valongo Observatory, Rio de Janeiro, Brazil 1 Observatorio do Valonogo, Rio de Janeiro, Brazil 1 Observatorio de Valongo, Rio de Janeiro, Brazil 1 Observatorio de Astronomia, Brazil 1 Observatorio Naval, Buenos Aires 1 Observatorio National, Sao Cristovao, Brazil 1 Observatorio Nacionale, Rio de Janeiro, Brazil 1 Observatorio Nacional/CNpq, Brazil 1 Observatorio Nacional/CNPq, Brasil). 1 Observatorio Nacional/CNPq, Brasil 1 Observatorio Nacional-CNPq, Rio de Janeiro, Brazil 1 Observatorio Nacional, Sao Cristovao, Rio de Janeiro, Brazil 1 Observatorio Nacional, Sao Cristovao, Brazil 1 Observatorio Nacional, Rio de Janerio, Brazil 1 Observatorio Nacional, Itajuba, Brazil 1 Observatorio Nacional do Brasil, Sao Cristovao, Brazil 1 Observatorio Nacional CNPq, Rio de Janeiro, Brazil 1 Observatorio Fabra, Barcelona, Spain 1 Observatorio Astrofisico Brasileiro, Rio de Janeiro, Brazil 1 Observatoire de Marseille, Porto Alegre, Brazil 1 CNPq, Rio de Janeiro, Brazil 43 44 Observatoire Midi-Pyrenees, Toulouse, France 137 Observatoire Midi-Pyrenees, Toulouse, France 61 Observatoire de Paris, Meudon, France 53 Observatoire de la Cote d'Azur, Nice, France 25 Observatoire Astronomique, Strasbourg, France 21 Observatoire de Paris-Meudon, Meudon, France 18 Observatoire de la Cote d'Azur, Grasse, France 15 Observatoire de Marseille, Marseille, France 11 Observatoire de Strasbourg, Strasbourg, France 10 Observatoire de Grenoble, Grenoble, France 9 Observatoire de Paris, Paris, France 9 Observatoire de Bordeaux, Floirac, France 8 Observatoire de Besancon, Besancon, France 7 Observatoire de la Cote-d'Azur, Nice, France 5 Observatoire de Paris-Meudon, France 5 Observatoire Midi-Pyrenees, Bagneres-de-Bigorre, France 5 Observatoire Midi-Pyrenees, Bagneres de Bigorre, France 4 Observatoire Midi Pyrenees, Toulouse, France 3 Toulouse, Universite, Toulouse, France 3 Observatorie de Marseille, Marseille, France 3 Observatorie de Besancon, Besancon, France 3 Observatoire de Nice, Nice, France 3 Observatoire de Lyon, France 3 Observatoire Midi-Pyrenees 2 Observatorie de Paris-Meudon, Meudon, France 2 Observatorie de Meudon, Meudon, France 2 Observatoire de Nice O.C.A., Nice, France 2 Observatoire de Midi-Pyrenees, Toulouse, France 2 Observatoire de Haute-Provence, St Michel, France 2 Matra Marconi Space France, Toulouse, France 1 Observatorie de Paris-Meudon, Paris, France 1 Observatorie de Grenoble, Grenoble, France 1 Observatorie Astronomique, Strasbourg, France 1 Observatoire de Paris-Meudon, Paris, France 1 Observatoire de Paris,, Meudon, France 1 Observatoire de Paris, France 1 Observatoire de Cote d'Azur, Nice, France 1 Observatoire de Calern/OCA, France 1 Observatoire de Calern, Caussols, France 1 Observatoire astronomique, Strasbourg, France 1 Observatoire Midi-Pyrennes, Toulouse, France 1 Observatoire Midi-Pyrennees, Toulouse, France 1 Observatoire Midi-Pyreneees, Toulouse, France 1 Observatiore de Paris, Meudon, France 1 DAEC Observatoire de Paris, Meudon, France 44 181 Hale Observatories, Pasadena, Calif. 547 Lick Observatory, Santa Cruz, CA 441 Palomar Observatory, Pasadena, CA 291 Hale Observatories, Pasadena, Calif. 188 Washburn Observatory, Madison, WI 186 McDonald Observatory, Austin, TX 163 Lick Observatory, Santa Cruz, Calif. 126 Nice, Observatoire, Nice, France 118 Haystack Observatory, Westford, MA 116 McDonald Observatory, Austin, Tex. 109 Owens Valley Radio Observatory, Pasadena, Calif. 109 Marseille, Observatoire, Marseille, France 92 High Altitude Observatory, Boulder, Colo. 78 Nice, Observatoire, France 75 Paris, Observatoire, Paris, France 75 Paris, Observatoire, France 67 IUE Observatory, Madrid, Spain 61 Dyer Observatory, Nashville, TN 58 Washburn Observatory, Madison, Wis. 50 Yerkes Observatory, Williams Bay, Wis. 46 Wise Observatory, Tel Aviv, Israel 43 Lund Observatory, Sweden 39 Big Bear Solar Observatory, Pasadena, CA 37 Palomar Observatory, Pasadena, Calif. 37 Lick Observatory, Santa Cruz 36 Onsala Rymdobservatorium, Onsala, Sweden 36 Lowell Observatory, Flagstaff, Ariz. 34 Besancon, Observatoire, Besancon, France 26 Caltech, Pasadena, CA, US 24 Behlen Observatory, Lincoln, NE 23 Perkins Observatory, Delaware, Ohio 22 Ritter Observatory, Toledo, OH 21 Whipple Observatory, Amado, AZ 17 Ritter Observatory, Toledo, Ohio 16 Wise Observatory, Israel 16 Carnegie Observatories, Pasadena, CA, US 15 Palomar Observatory, Pasadena, CA, US 13 Palomar Observatory, Pasadena 13 McDonald Observatory, Fort Davis 13 ESA IUE Observatory, Madrid, Spain 11 Konkoly Obszervatorium, Budapest, Hungary 11 Behlen Observatory, Lincoln, Neb. 10 National Observatory, Athens, Greece 10 Haystack Observatory, Westford, Mass. 9 Dyer Observatory, Nashville, Tenn. 8 Yunnan Observatory, Yunnan, China 8 Yunnan Observatory, Kumming, China 8 Observatorio Astronomico 8 Haystack Observatory, Westford, MA, US 8 Big Bear Solar Observatory, Pasadena, Calif. 7 Hale Observatories, Pasadena, CA 6 Nordlyobservatoriet, Tromso, Norway 5 Marseille, Observatoire, Marseille 5 Hvar, Opservatorija, Zagreb, Yugoslavia 5 Carnegie Observatories, La Serena, Chile 4 Washburn Observatory, Madison, WI, US 4 Radio Observatory, Columbus, Ohio 4 Nordlysobservatoriet, Tromso, Norway 4 Landis Observatory, East Point, Ga. 4 Kiso Observatory, Nagano, Japan 4 Dudley Observatory, Schenectady, NY 4 Bradley Observatory, Decatur, GA 4 Battelle Observatory, Richland, Wash. 3 Yerkes Observatory, Chicago, Ill. 3 Vicolo Osservatorio, Padova, Italy 3 Prairie Observatory, Urbana, Ill. 3 Palomar Observatory, Palomar Mountain, Calif. 3 Palomar Observatory, Caltech 105-24 3 Mees Observatory, Rochester, NY 3 Lick Observatory, Mount Hamilton 3 Kiso Observatory, Mitaka, Japan 3 IUE Observatory, Villafranca, Spain 3 Hvar Opservatorija, Yugoslavia 3 Arcetri, Osservatorio, Florence, Italy 2 Vicolo dell'Osservatorio, Padova, Italy 2 Vatican Observatory, Vatican City 2 Uppsala Observatory, Sweden 2 Solar Astronomy, Pasadena, CA US, 2 San Fernando Observatory, El Segundo, Calif. 2 RUG Observatorium, Gent, Belgium 2 Paris Observatoire, Meudon, France 2 Pace Observatory, Pleasantville, NY, US 2 Owens Valley Observatory, Pasadena, CA 2 Mees Observatory, Rochester, N.Y. 2 Lick Observatory, Santa Cruz, CA, US 2 Lick Observatory, Mount Hamilton, Calif. 2 Las Campanas Observatory, Pasadena, CA 2 Kiso Observatory, Mitake, Japan 2 Infrared Observatory, Laramie 2 Hvar Opservatorija, Zagreb, Yugoslavia 2 Geneve, Observatoire, Sauverny 2 Dudley Observatory, Albany, N.Y. 2 Beijing Observatory, Beijing, China 2 Alger, Observatoire, Algeria 1 Vicolo dell' Osservatorio, Padova, Italy 1 Vicolo Osservatorio, Padua, Italy 1 Tallinn Observatory, Tallinn, Estonia 1 Steward Observatory, Austin, TX 1 SRI International, Menlo Park, Calif. 1 Renner Observatory, Dousman, Wis. 1 R.U.G. Observatorium, Gent, Belgium 1 Polomar Observatory, Pasadena, CA 1 Planetary Society, Pasadena, CA 1 Perth Observatory, Australia 1 Perkin-Elmer Corp., South Pasadena, Calif. 1 Parkes Observatory, Parkes, NSW, Australia 1 Parkes Observatory, Australia 1 Paris, Observatory, Meudon, France 1 Paris, Observatorie, Meudon, France 1 Paris, Observatorie, Meudon 1 Paris, Observatoire, Paris 1 Paris, Ob servatoire, Meudon, France 1 Paris Observatoire, Paris, France 1 Palomar Observatory, San Diego, CA 1 Palomar Observatory, Pasadena,CA 1 Palomar Observatory Pasadena, CA 1 Owens Valley Radio Observatory, Pasadena, Calif, 1 Owens Valley Radio Observatory, Pasadena, Calif 1 Owens Valley Radio Observatory, Padadena, Calif. 1 Onsala Ryndobservatorium, Onsala, Sweden 1 Observatorio Fabra, Spain 1 Observatoire de Mexico, Mexico 1 Nice, Obervatoire, Nice, France 1 Nice Observatoire, France 1 NASA. Pasadena Office, Pasadena, CA, US 1 Mount Wilson Observatory, Pasadena, Calif. 1 Moore Observatory, Crestwood, KY 1 McDonald Observatory, Austin, Texas 1 Marseille, Observatorie, France 1 Marseille Observatoire, Marseille, France 1 Marseille Observatoire, Marseille 1 Manley Observatory, United Kingdom 1 Lines Observatory, Phoenix, AZ 1 Lines Observatory, Mayer, AZ 1 Limber Observatory, Pipe Creek, TX, US 1 Lick, Observatory, Santa Cruz, CA 1 Lick Observatory, Santa Cruz, AZ 1 Lick Observatory Santa Cruz, CA 1 Lick Obervatory, Santa Cruz, CA 1 Las Campanas Observatory, Pasadena, Calif. 1 La Jolla Institute, La Jolla, Calif. 1 Konkoly Observatorium, Budapest, Hungary 1 Klamath Observatory, Somes Bar, CA 1 Kiso Observatory, Tokyo, Japan 1 Kiso Observatory, Nagano 1 Kandilli Observatory, Istanbul, Turkey 1 Jubilee Observatory, East Peoria, IL, US 1 Infrared Observatory, Laramie, WY 1 IUE Observatory, Seabrook, MA 1 IUE Observatory, Madrid Spain 1 IUE Observatory, Lanham, MD 1 IUE Observatory, Greenbelt, MD 1 Hvar, Opservatorij, Zagreb, Yugoslavia 1 Hvar Opservatorij, Hvar, Yugoslavia 1 Hvar Observatory, Zagreb, Croatia 1 High Altitude Observatory, Pasadena, Calif. 1 Hale Observatories, Berkeley, Calif. 1 Grenoble, Observatoire, Grenoble 1 Grenoble Observatoire, France 1 Fritz Peak Observatory, Boulder, Colo. 1 Ford Observatory, Lakewood, CA 1 Fick Observatory, Ames, Iowa 1 Fairborn Observatory, Phoenix, AZ 1 ESA-IUE Observatory, Madrid, Spain 1 ESA-IUE Observatorio, Madrid, Spain 1 ESA, IVE Observatory, Madrid, Spain 1 ESA, IUE Observatory, Madrid, Spain 1 Dudley Observatory, Schenectady, N.Y. 1 Dudley Observatory, Latham 1 Dudley Observatory, Albany 1 Dearborn Observatory, Evanston, Ill. 1 Casey Observatory, Eau Claire, WI 1 Carnegie Observatories, Santa Barbara, CA, US 1 Carnegie Observatories, Pasedena, CA, US 1 Carnegie Observatories, Pasadena, CA 1 Carnegie Observatories, Casilla, La Serena, Chile 1 Caltech-JPL, Pasadena, CA, US 1 Calern, Observatoire, Saint-Vallier 1 Big Bear Observatory, Pasadena, CA 1 Besancon Observatoire, Besancon, France 1 Battelle Observatory, Richland, WA 1 Baja Observatory, Hungary 45 17 David Dunlap Observatory, Richmond Hill, Canada 113 David Dunlap Observatory, Richmond Hill, Ontario, Canada 73 David Dunlap Observatory, Richmond Hill, Canada 57 David Dunlap Observatory, Toronto, Canada 13 David Dunlap Observatory, Richmond Hill 10 David Dunlap Observatory, Richmond Hill, Ontario 5 David Dunlop Observatory, Richmond Hill, Ontario, Canada 3 Toronto, University, Richmond Hill, Canada 3 David Dunlap Observatory, West Hill, Ontario, Canada 3 David Dunlap Observatory, Toronto 1 David Dunlop Observatory, Richmond Hill 1 David Dunlap Osbservatory, Richmond Hill 1 David Dunlap Observatroy, Richmond Hill, Ontario, Canada 1 David Dunlap Observatory, Toronto, Ontario, Canada 1 David Dunlap Observatory, Richmond Hills, Ontario, Canada 1 David Dunlap Observatory, Mississauga, Canada 1 David Dunlap Observatory, Canada 1 David Dunlap Laboratory, Richmond Hill, Canada 46 21 Observatoire du Mont Megantic, Montreal, Canada 60 Observatoire du Mont Megantic, Montreal, Canada 57 Observatoire du Mont Megantic, Quebec, Canada 25 Observatoire Astronomique du Mont Megantic, Quebec, Canada 22 Observatoire du Mont Megantic 17 Observatoire du Mont Megantic, Canada 10 Observatoire Astronomique du Mont Megantic, Montreal, Canada 8 Universite de Montreal, Montreal, Canada 8 Observatoire du Mont Megantic, Sainte-Foy, Canada 5 Observatoire du Mont Megantic, Quebec 4 Observatoire du Mont Megantic, Montreal 3 Observatoire du Mont Megantic, Ste.-Foy, Canada 3 Observatoire du Mont Megantic, Notre-Dame-des-Bois, Canada 1 University de Montreal, Montreal, Canada 1 Universite dr Montreal, Montreal, Canada 1 Observatoire du mont Megantic, Montreal, Canada 1 Observatoire du Monte Megantic, Montreal, Canada 1 Observatoire du Mont-Megantic, Montreal, Canada 1 Observatoire du Mont Megantique, Montreal, Canada 1 Observatoire du Mont Megantic, Sainte Foy, Canada 1 Observatoire Astronomique du Mont Megantic Quebec, Canada 1 Observatoire Astronomique de Mont Megantic, Montreal, Canada 47 16 Lawrence Livermore National Laboratory, Livermore 146 Lawrence Livermore National Laboratory, Livermore, CA 48 Lawrence Livermore National Laboratory, Livermore 42 Lawrence Livermore National Lab., Livermore, CA 29 Lawrence Livermore National Laboratory, Livermore, CA, US 24 Lawrence Livermore National Lab., Livermore, CA, US 11 Lawrence Livermore National Laboratory, Livermore, CA 94550, USA 7 Lawrence Livermore National Lab., Livermore 4 Lawrence Livermore National Lab., CA 4 Lawrence Berkeley Laboratory, Berkeley 2 Lawrence Livermore National Observatory, Livermore, CA, US 2 Lawrence Livermore National Laboratory, Livermore, California, US 1 Sandia National Laboratories, Livermore, CA 1 Lawrence Livermore National Laboratory, CA 1 Lawrence Livermore National Laboratories, Livermore 1 Lawrence Livermore National Lab. Livermore, CA 1 Lawrence Livermore Laboratory, Livermore, CA 48 21 Cape Town, University, Rondebosch, Republic of South Africa 140 Cape Town, University, Rondebosch, Republic of South Africa 12 Cape Town, University, Cape Town, Republic of South Africa 12 Cape Town Univ., Rondebosch, South Africa 10 Rhodes University, Grahamstown, Republic of South Africa 7 Natal, University, Durban, Republic of South Africa 6 Cape Town, University, Rondebosch, South Africa 4 Capetown, University, Rondebosch, Republic of South Africa 3 Witwatersrand, University, Johannesburg, Republic of South Africa 3 Cape Town University, Rondebosch, Republic of South Africa 2 Cape Town, University, Republic of South Africa 1 South Africa, University, Pretoria, Republic of South Africa 1 Pretoria, University, Pretoria, Republic of South Africa 1 Natal, University, Durhan, Republic of South Africa 1 Natal University, Durban, Republic of South Africa 1 Fort Hare University, Alice, Republic of South Africa 1 Cape Town, University, Rondesbosch, Republic of South Africa 1 Cape Town, University, Rondebousch, Republic of South Africa 1 Cape Town, University, Rondebosh, Republic of South Africa 1 Cape Town, University, Rondebosch, Republik of South Africa 1 Cape Town, University, Rondebosch Republic of South Africa 1 Cape Town, University, Rodenbosch, Republic of South Africa 49 20 South African Astronomical Observatory, Observatory, Republic of South Africa 323 South African Astronomical Observatory, Observatory, Republic of South Africa 38 South African Astronomical Observatory, PO Box 9, Observatory 7935, South Africa 30 South African Astronomical Observatory, PO Box 9, Observatory 7935, Cape, South Africa 29 South African Astronomical Observatory, Observatory, South Africa 8 South African Astronomical Observatory, Cape Town, Republic of South Africa 6 South African Astronomical Observatory, PO Box 9, Observatory, Cape 7935, South Africa 5 South African Astronomical Observatory, Cape Town, South Africa 4 South African Astronomical Observatory, PO Box 9, Observatory, 7935 South Africa 2 South African Astronomical Observatory, Republic of South Africa 2 South African Astronomical Observatory, PO Box 9, Observatory, 7935, South Africa 1 South African Astronomy Observatory, Observatory, Republic of South Africa 1 South African Astronomical Observatory, Sutherland, Republic of South Africa 1 South African Astronomical Observatory, PO Box 0, Observatory 7935, South Africa 1 South African Astronomical Observatory, Observatory, Cape Province, Republic of South Africa 1 South African Astronomical Observatory, Capetown, Republic of South Africa 1 South African Astronomical Observatory, Cape, Republic of South Africa 1 South African Astronomical Observatory PO Box 9, Observatory 7935, South Africa 1 South African Astronomical Institute, Observatory, Republic of South Africa 1 South African Asteronomical Observatory, Observatory, Republic of South Africa 1 South Africa Astronomical Observatory, Observatory, Republic of South Africa 50 3 Mullard Radio Astronomy Observatory, Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, UK 53 Mullard Radio Astronomy Observatory, Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, UK 22 Mullard Radio Astronomy Observatory, Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE 3 Mullard Radio Astronomy Observatory, Madingley Road, Cambridge CB3 0HE, UK 51 19 Royal Greenwich Observatory, Herstmonceux, Sussex, England 257 Royal Greenwich Observatory, Herstmonceux, Sussex, England 166 Royal Greenwich Observatory, Herstmonceux, England 17 Royal Greenwich Observatory, Hailsham, Sussex, England 12 Royal Greenwich Observatory, Herstmonceux, East Sussex, England 9 Royal Greenwich Observatory, Herstmonceux, Sussex 7 Royal Greenwich Observatory, Hailsham, England 5 Royal Greenwich Observatory, Herstmonceux 4 Royal Greenwich Observatory, Hertsmonceux, Sussex, England 4 Royal Greenwich Observatory, Herstmonceaux, Sussex, England 2 Royal Greenwich Observatory, Hertmonceux, Sussex, England 2 Royal Greenwich Observatory, Hailsham, Sussex 1 Royal Greenwich Observatory, Hertsmonceux, Sussex 1 Royal Greenwich Observatory, Hertsmonceux, England 1 Royal Greenwich Observatory, Hertmontceux, Sussex, England 1 Royal Greenwich Observatory, Herstmonseux, Sussex, England 1 Royal Greenwich Observatory, Herstmonceux, Essex, England 1 Royal Greenwich Observatory, Hermonstceux, England 1 Royal Greenwich Observatory, Hailsham Sussex, England 1 Royal Greeenwich Observatory, Herstmonceux, England 52 10 Andalucia, Instituto de Astrofisica, Granada, Spain 57 Andalucia, Instituto de Astrofisica, Granada, Spain 33 Andalucia, Inst. de Astrofisica, Granada, Spain 3 Andalucia, Inst. de Astrofisica, Granada 2 Canarias, Instituto de Astrofisica, La Laguna, Spain 2 Andalucia, Inst. de Astrofisica 1 Laboratorio de Astrofisica, Madrid, Spain 1 CSIC, Instituto de Optica, Madrid, Spain 1 Andalucia, Instituto de Astrofisica, Granada 1 Andalucia, Instituto de Astrofisica, Apartado, Spain 1 Andalucia, Instituto de Astrofisica 53 11 National Research Council of Canada, Herzberg Institute of Astrophysics, Ottawa 84 National Research Council, Herzberg Institute of Astrophysics, Ottawa, Canada 70 National Research Council of Canada, Herzberg Institute of Astrophysics, Ottawa 27 National Research Council of Canada, Herzberg Institute of Astrophysics, Ottawa, Canada 15 National Research Council of Canada, Herzberg Inst. of Astrophysics, Ottawa 3 National Research Council, Herzberg Institute of Astrophysics, Ottawa 2 National Research Council of Canada, Herzberg Institute for Astrophysics, Ottawa, Canada 1 National Research Council, Herzberg, Institute of Astrophysics, Ottawa, Canada 1 National Research Council, Herzberg Institute for Astrophysics, Ottawa, Canada 1 National Research Council of Canada, Merzberg Institute of Astrophysics, Ottawa, Canada 1 National Research Council of Canada, Herzberg Inst. for Astrophysics, Ottawa 1 National Research Council of Canada, Hertzberg Institute of Astrophysics, Ottawa, Canada 54 40 Instituto de Astrofisica de Canarias, La Laguna, Spain 173 Instituto de Astrofisica de Canarias, La Laguna, Spain 86 Inst. de Astrofisica de Canarias, La Laguna, Spain 54 Instituto de Astrofisica de Canarias, Tenerife, Spain 35 Instituto de Astrofisica de Andalucia, Granada, Spain 21 Instituto de Astrofisica de Canarias, 38200 La Laguna, Tenerife, Spain 19 Inst. de Astrofisica de Canarias, Tenerife, Spain 8 Instituto de Astrofisica de Canarias, Tenerife, Canary Islands, Spain 6 Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain 6 Inst. Astrofisica de Canarias, Tenerife, Spain 6 CSIC, Instituto de Astrofisica de Canarias, La Laguna, Spain 4 Instituto de Astrofisica de Canarias, E-38200 La Laguna, Tenerife, Spain 4 Instituto de Astrofisca de Canarias, La Laguna, Spain 4 Inst. de Astrofisica de Andalucia, Granada, Spain 3 Instituto de Astrofisica de Canaries, La Laguna, Spain 3 Instituto de Astrofisica de Canaries, E-38200 La Laguna, Tenerife, Spain 3 Instituto de Astrofisica de Canarias, 38200, La Laguna, Tenerife, Spain 3 Instituto de Astrofisica de Andalucia, Granada 3 Inst. de Astrophisica de Canarias, Tenerife, Spain 2 Instituto de Astrofisica de Canarias, La Laguna 2 Instituto de Astrofisica de Canarias, E-38200, La Laguna, Tenerife, Spain 2 Instituto de Astrofisica de Canarias, 38200 - La Laguna, Tenerife, Spain 2 Instituto de Astrofiscia de Andalucia, Granada, Spain 2 Institute de Astrofisca de Canarias, Tensrife, Spain 2 Inst. de Astrofiscia de Canarias, La Laguna Tenerife, Spain 2 CSIC, Instituto de Astrofisica de Andalucia, Granada, Spain 1 Instuto de Astrofisica de Canaries, Tenerife, Spain 1 Instituto do Astrofisica de Canarias, La Laguna, Spain 1 Instituto di Astrofisica de Andalucia, Granada, Spain 1 Instituto de Astrofisica, Tenerife, Canary Islands, Spain 1 Instituto de Astrofisica de Carnarias, Tenerife, Spain 1 Instituto de Astrofisica de Canaries, Tenerife, Canary Islands, Spain 1 Instituto de Astrofisica de Canaries, Canary Islands, Spain 1 Instituto de Astrofisica de Canarias, Tenerife 1 Instituto de Astrofisica de Andaulcia, Granada, Spain 1 Instituto de Astrofiscia de Canarias, Tenerife, Spain 1 Instituto de Astrofisca de Canarias, Tenerife, Spain 1 Instituto de Astrofisca de Canarias, La Laguana, Spain 1 Instituto de Astrofisca de Canarias, E38200-La Laguna, Tenerife, Spain 1 Instituto de Astrof+isica de Canarias, 38200 La Laguna, Tenerife, Spain 1 Inst. de Astronomia de Canarias, La Laguna, Spain 55 27 Tata Institute of Fundamental Research, Bombay, India 269 Tata Institute of Fundamental Research, Bombay, India 56 Tata Institute of Fundamental Research, Bangalore, India 43 Tata Institute of Fundamental Research, Ootacamund, India 40 Tata Inst. of Fundamental Research, Bombay, India 15 Tata Institute of Fundamental Research, Poona, India 11 Tata Institute of Fundamental Research, Udhagamandalam, India 9 Tata Institute for Fundamental Research, Bombay, India 5 Tata Inst. of Fundamental Research, Poona, India 4 Tata Inst. of Fundamental Research, Colaba, Bombay, India 3 Tata Institute of Fundamental Research, Bombay 3 Tata Institute of Fundamental Research 2 Tati Institute of Fundamental Research, Bombay, India 2 Tata Institute of Fundamental Research, Pune, India 2 Tata Institute of Funadamental Research, Bombay, India 1 Tata Institute of Fundamental Research, Udhagamandalan, India 1 Tata Institute of Fundamental Research, Udhagamanadalam, India 1 Tata Institute of Fundamental Research, Ootmund, India 1 Tata Institute of Fundamental Research, Ootacamund 1 Tata Institute of Fundamental Research, Ootacamud, India 1 Tata Institute of Fundamental Research, Oatacamund, India 1 Tata Institute of Fundamental Research, Bombay 400 005, India 1 Tata Institute of Fundamental Research, Bombary, India 1 Tata Institute for Fundamental Studies, Bombay, India 1 Tata Institute for Fundamental Research, Bangalore, India 1 Tata Inst. of Fundamental Research, Pune, India 1 Tata Inst. of Fundamental Research, Pouna, India 1 Tata Inst. of Fundamental Research, Bombay 56 13 Universitetets Astronomiske Observatorium, Copenhagen, Denmark 88 Universitetets Astronomiske Observatorium, Copenhagen, Denmark 85 Universitetets Astronomiske Observatorium, Tollose, Denmark 5 Universitets Astronomiske Observatorium, Copenhagen, Denmark 2 Astronomical Observatory, Copenhagen, Denmark 1 Universitets Astronomiske Observatorium, Tollose, Denmark 1 Universitetets, Astronomiske Observatorium, Copenhagen, Denmark 1 Universitetets Observatorium, Tollose, Denmark 1 Universitetets Astronomiske Observatorium, Kopenhagen, Denmark 1 Universitetes Astronomiske Observatorium, Copenhagen, Denmark 1 Universitet Astronomiske Observatorium, Copenhagen, Denmark 1 Kobenhavns Universitets Astronomiske Observatorium, Tollose, Denmark 1 Kobenhavns Universitets Astronomiske Observatorium, Copenhagen, Denmark 1 Astronomiske Observatorium, Copenhagen, Denmark 57 3 International Ultraviolet Explorer Observatory, Madrid, Spain 55 International Ultraviolet Explorer Observatory, Madrid, Spain 1 International Ultraviolet Observatory, Madrid, Spain 1 International Ultraviolet Explorer Observatory 58 13 Joint Institute for Laboratory Astrophysics, Boulder, Colo. 443 Joint Institute for Laboratory Astrophysics, Boulder, CO 143 Joint Institute for Laboratory Astrophysics, Boulder, Colo. 143 Joint Institute for Laboratory Astrophysics 34 Joint Inst. for Lab. Astrophysics, Boulder, CO 13 Joint Institute for Laboratory Astrophysics, Boulder 6 Joint Inst. for Laboratory Astrophysics, Boulder, CO 2 Joint Institute for Laboratory, Astrophysics, Boulder, CO 2 Joint Inst. for Laboratory Astrophysics, Boulder, CO, US 2 Joint Inst. for Laboratory Astrophysics, Boulder 1 Joint Institute for Labortory Astrophysics, Boulder, CO 1 Joint Institute for Laboratory Physics, Boulder, Colo. 1 Joint Institute for Laboratory Astrophysics, Boulder Colo. 1 Joint Inst. for Laboratory Astrophysics 59 15 Mount Wilson and Las Campanas Observatories, Pasadena, CA 368 Mount Wilson and Las Campanas Observatories, Pasadena, CA 30 Mount Wilson and Las Campanas Observatories, Pasadena, Calif. 7 Mount Wilson and Las Campanas Observatories, Pasadena 2 Mount Wilson and Las Campanas Observatory, Pasadena, CA 1 Mt. Wilson and Las Campanas Observatories, Pasadena, Calif. 1 Mount Wilson and las Campanas Observatories, Pasadena, CA 1 Mount Wilson and Palomar Observatories, Pasadena, CA 1 Mount Wilson and Los Campanas Observatories, Pasadena, Calif. 1 Mount Wilson and Los Campanas Observatories, Pasadena, CA 1 Mount Wilson and Las Companas Observatories, Pasadena, CA 1 Mount Wilson and Las Companas Observatories 1 Mount Wilson and Las Campanas Observatories, Washington, DC 1 Mount Wilson and Las Campanas Observatories, La Serena, Chile 1 Mount Wilson and Las Campanas Observatories Pasadena, CA 1 Mount Wilson and Las Campanas Observatories 60 44 Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass. 1875 Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 429 Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, US 271 Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass. 26 Harvard-Smithsonian Center for Astrophysics 19 Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts, US 15 Harvard Smithsonian Center for Astrophysics, Cambridge, MA, US 11 Harvard-Smithsonian Center for Astrophysics, Cambridge 9 Smithsonian Center for Astrophysics, Cambridge, MA, US 4 Havard-Smithsonian Center for Astrophysics, Cambridge, MA, US 4 Harvard-Smithsonian Center for Astrophysics, Amado, AZ, US 4 Harvard Smithsonian Center for Astrophysics, Cambridge, MA 3 Harvard-Smithsonican Center for Astrophysics, Cambridge, MA, US 3 Harvard-Smithsonian Cntr. for Astrophysics, Cambridge, MA, US 3 Harvard-Smithsonian Center for Astyrophysics, Cambridge, MA, US 3 Harvard-Smithsonian Center for Astrophyics, Cambridge, MA 2 Harvard-Smithsonian Center for Astrophysics, Tivon, Israel 2 Harvard-Smithsonian Center for Astrophysics, Cambride, MA 2 Harvard-Smithsonian Center for AStrophysics, Cambridge, MA, US 2 Harvard- Smithsonian Center for Astrophysics, Cambridge, MA 2 Harvard Smithsonian Center for Astrophysics, Cambridge, Mass. 1 Havard-Smithsonian Center for Astrophysics, Cambridge, Mass. 1 HarvardSmithsonian Center for Astrophysics, Cambridge, Mass. 1 Harvard/Smithsonian Center for Astrophysics, Cambridge, Massachusetts, US 1 Harvard-Smithsonsian Center for Astrophysics, Cambridge, MA 1 Harvard-Smithsonina Center for Astrophysics, Cambridge, MA, US 1 Harvard-Smithsonian Centers for Astrophysics, Cambridge, MA, US 1 Harvard-Smithsonian Center for Atmospherics, Cambridge, MA 1 Harvard-Smithsonian Center for Astrophysis, Cambridge, MA 1 Harvard-Smithsonian Center for Astrophysik, Cambridge, MA 1 Harvard-Smithsonian Center for Astrophysics, US 1 Harvard-Smithsonian Center for Astrophysics, Granada, Spain 1 Harvard-Smithsonian Center for Astrophysics, Cambrige, MA 1 Harvard-Smithsonian Center for Astrophysics, Cambrigde, MA 1 Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass 1 Harvard-Smithsonian Center for Astrophysics, Cambridge, MS, US 1 Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, uS 1 Harvard-Smithsonian Center for Astrophysics, Cambridge, M 1 Harvard-Smithsonian Center for Astrophysics, Cambridge MA 1 Harvard-Smithsonian Center for Astrophysics, Cambridg 1 Harvard-Smithsonian Center for Astrophysics, Cambrdige, MA 1 Harvard-Smithsonian Center for Astrophyisics, Cambridge, MA`, US 1 Harvard-Smithsonian Center For Astrophysics, Cambridge, MA 1 Harvard-Smithonsian Center for Astrophysics, Cambridge, MA, US 1 Harvad-Smithsonian Center for Astrophysics, Cambridge, MA 61 34 CNR, Laboratorio di Astrofisica Spaziale, Frascati, Italy 228 CNR, Istituto di Astrofisica Spaziale, Frascati, Italy 67 CNR, Laboratorio di Astrofisica Spaziale, Frascati, Italy 44 CNR, Ist. di Astrofisica Spaziale, Frascati, Italy 17 CNR, Istituto di Astrofisica Spaziale, Frascati 16 CNR, Istituto di Astrofisica Spaziale, Rome, Italy 10 CNR, Istituto Astrofisica Spaziale, Frascati, Italy 8 CNR, Laboratorio di Astrofisica Spaziale, Frascati 5 Istituto di Astrofisica Spaziale (CNR), Frascati, Italy 5 CNR, Laboratorio per il Plasma nello Spazio, Frascati, Italy 4 Istituto Astrofisica Spaziale, Frascati, Italy 3 Istituto di Astrofisica Spaziale, CNR, Frascati, Italy 3 CNR, Istituto di Astrofisica Spatiale, Frascati 3 CNR, Istituto de Astrofisica Spaziale, Frascati, Italy 2 Istituto di Astrofisica Spaziale, Frascati, Italy 2 Instituto di Astrofisica Spaziale, Frascati, Italy 2 Instituo Astrofiscia Spaziale, Frascati, Italy 2 CNR, Istituto di Astrofisica Spatiale, Frascati, Italy 2 CNR, Ist. di Astrofisica Spaziale, Frascati 2 CNR, Instituto di Astrofisica Spaziale, Frascati, Italy 1 Istituto di Astrofisica Spaziale, Franscati, Italy 1 Istituto di Astrofisica Spaziale CNR, Frascati, Italy 1 Istituto di Astrofiscia Spaziale, Frascati, Italy 1 Istituto Astrofisica Spaziale, CNR, Frascati, Italy 1 Instituto de Astrofisica Spaziale, Franscati, Italy 1 CNR, Laboratorio di Astrofisica Spaziale, Rome, Italy 1 CNR, Laboratorio di Astrofisca Spaziale, Frascati, Italy 1 CNR, Laboratorio Astrofisica Spaziale, Frascati, Italy 1 CNR, Istituto di Astrofisica Spaziole, Frascati, Italy 1 CNR, Istituto di Astrofisica Spaziale, Frasc 1 CNR, Istituto di Astrofisica Spatiale, Rome, Italy 1 CNR, Istituto di Astrofisica Spatiale Frascati, Italy 1 CNR, Istituto di Astrofiscia Spaziale, Frascati, Italy 1 CNR, Istituto di Astrifisica Spaziale, Frascati, Italy 1 CNR Istituto di Astrofisica Spaziale, Frascati, Italy 62 12 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA 220 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK 108 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA 5 Institute of Astronomy, The Observatories, Madingley Road, Cambridge CB3 0HA 4 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, CB3 0HA 3 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA y 3 Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE 2 MRAO, Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE 2 Institute of Astronomy, The Observatories, Cambridge CB3 0HA, UK 2 Institute of Astronomy, Cambridge University, Cambridge CB3 0HA, UK 1 The Observatories, Madingley Road, Cambridge CB3 0HA 1 Institute of Astronomy, Madingley Road, nCambridge CB3 0HA 1 Institute of Astronomy, Madingley Rd, Cambridge CB3 0HA 63 5 Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, Mass. 186 Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, Mass. 2 Harvard College Observatory and Smithsonian Astrophysical Observatory 2 Harvard College Observatory and Smithsonian Astrophysical Laboratory, Cambridge, Mass. 1 Havard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, Mass. 1 Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, MA 64 25 Australian National University, Canberra, Australia 94 Australian National University, Canberra, Australia 45 Tasmania, University, Hobart, Australia 15 Australian National Univ., Weston Creek, Australia 9 Australian National Univ., Canberra, Australia 6 Australian National University, Private Bag, Australia 5 Western Australia, University, Nedlands, Australia 5 Australian National Univ., Private Bag, Australia 4 Australian National University, Weston, Australia 3 New South Wales, University, Canberra, Australia 3 New South Wales, University, Campbell, Australia 3 Australian National University, Weston Creek, Australia 3 Australian Defence Force Academy, Canberra, Australia 2 The Australian National University, Weston Creek, Australia 2 The Australian National University, Australia 2 The Australian National Univ., Private Bag, Australia 2 Australian National Univ., Australia 1 Western Australia, University, Perth, Australia 1 Western Australia, University, Crawley, Australia 1 The Australian Natoinal Univ., Canberra, Australia 1 The Australian National University, Canberra, Australia 1 The Australian Nat. Univ., Canberra, Australia 1 South West Wales Univ., Canberra, Australia 1 Pusan National University, Pusan, Korea 1 Australian National University, Canberra 1 Australian National University, Australia 65 117 Leiden, Sterrewacht, Netherlands 159 Amsterdam, Universiteit, Netherlands 149 Meudon, Observatoire, France 137 Leiden, Sterrewacht, Leiden, Netherlands 103 ESTEC, Noordwijk, Netherlands 64 Leiden, Sterrewacht, Netherlands 52 Dwingeloo, Radiosterrenwacht, Netherlands 45 Groningen State Univ., Netherlands 40 Leiden, Rijksuniversiteit, Netherlands 39 Amsterdam Univ., Netherlands 26 Leiden Observatory, Leiden, Netherlands 26 Amsterdam, University, Netherlands 25 Leiden Observatory, Netherlands 24 SRON-Leiden, Leiden, Netherlands 23 ASTRON, Dwingeloo, Netherlands 16 Georgia State Univ., Atlanta 15 Heidelberg Univ., Germany 14 Utrecht, State University, Netherlands 14 Radiosterrenwacht, Dwingeloo, Netherlands 12 SRON, Groningen, Netherlands 11 ETH-Zentrum, Zurich, Switzerland 9 Leiden Observatory, Leiden, The Netherlands 9 Kapteyn Sterrenwacht, Roden, Netherlands 9 ASTRON, Amsterdam, Netherlands 8 Leiden, Observatory, Netherlands 7 Utrecht Univ., Netherlands 7 Huygens Laboratory, Leiden, Netherlands 7 Free University, Amsterdam, Netherlands 5 SRON, Leiden, Netherlands 5 Radiosterrewacht, Dwingeloo, Netherlands 5 Leiden, Rijksuniv., Sterrewacht, Netherlands 5 CERN, Geneva, Switzerland 4 Vrije Univ., Amsterdam, The Netherlands 4 Univ. Basel, Basel, Switzerland 4 Sterrewacht, Leiden, Netherlands 4 Sterrewacht Sonnenborgh 4 Leiden State Univ., Netherlands 4 Amsterdam, Vrije Universiteit, Netherlands 3 Utrecht, Sterrewacht, Utrecht, Netherlands 3 Univ. Groningen, Groningen, Netherlands 3 Leiden, Rijksuniversiteit 3 Leiden Univ., Netherlands 3 Helsinki, Sterrewacht, Finland 3 Fokker, Schiphol, Netherlands 3 ETH Zentrum, Zurich, Switzerland 3 ESA/ESTEC, Noordwijk, Netherlands 2 Universiteit Utrecht, Utrecht, Netherlands 2 Szczecin, Uniwersytet, Poland 2 Remeis-Sternwarte, Bamberg 2 Radio Sterrewacht, Westerbork, Netherlands 2 Radio Sterrewacht, Dwingeloo, Netherlands 2 Leiden, State University, Netherlands 2 Leiden Sterrewacht, Leiden, Netherlands 2 Kapteyn Sterrewacht, Roden, Netherlands 2 Kapteyn Observatory, Roden, Netherlands 2 Kapteyn Lab., Groningen, Netherlands 2 Free Univ., Amsterdam, Netherlands 2 Fokker, Amsterdam, Netherlands 2 ESTEC, Postbus, Netherlands 2 ESA, Noordwijk, Netherlands 2 Delft, Technische Hogeschool, Netherlands 2 Delft Univ. of Technology, Netherlands 2 Delft Technical Univ., Netherlands 2 CHEAF, Amsterdam, Netherlands 1 Utrecht, Rijksuniversitet, Netherlands 1 Utrecht, Rijksuniv., Netherlands 1 Univ.-Sternwarte, Germany 1 Univ. of Utrecht, Utrecht, The Netherlands 1 Univ. Bern, Bern, Switzerland 1 TWI, Delft, Netherlands 1 Space Research Groningen, Netherlands 1 SRON-Utrecht, Utrecht, The Netherlands 1 SRON-Groningen, Groningen, Netherlands 1 SRON, Lab. for Space Research, Netherlands 1 Remeis Sternwarte, Bamberg 1 Radio Sterrenwacht, Westerbork, Netherlands 1 PTT Research, Groningen, Netherlands 1 Nijmegen, Katholieke Univ., Netherlands 1 Nijmegen Catholic Univ., Netherlands 1 NFRA, Radiosterrenwacht, Netherlands 1 NFRA, Dwingeloo, Netherlands 1 Melkweg, Dwingeloo, Netherlands 1 Leyden, Sterrewacht, Leiden, Netherlands 1 Leiden, Universiteit, Netherlands 1 Leiden, Sterrewacht 1 Leiden University, Netherlands 1 Leiden Univ., Leiden, Netherlands 1 Leiden Sterrewacht, Netherlands 1 Leiden Sterrenwacht, Leiden, Netherlands 1 Leiden Rijksuniversiteit Sterrewacht, Netherlands 1 Lausanne, Univ., Switzerland 1 Lausanne Univ., Switzerland 1 Lab. for Space Research, Netherlands 1 Lab. for Sapce Research, Netherlands 1 Kapteyn Sterrenwacht, Roden 1 Kapteyn Sterrenwacht, Groningen, Netherlands 1 Kapteyn Observatory, Netherlands 1 Kapteyn Inst., Groningen, Netherlands 1 Kapteyn Astronomical Inst., Netherlands 1 Kapetyn Observatory, Netherlands 1 Groningen, University, Netherlands 1 Groningen, Rijksuniv., Netherlands 1 Groningen Univ., Netherlands 1 Fokker, Schipol, Netherlands 1 Fokker Aerospace, Amsterdam, Netherlands 1 FOM, Nieuwegein, Netherlands 1 ESTEC, Noordwijk, The Netherlands 1 ESTEC, Noordwijk, Netheralnds 1 ESTEC, Noordwijk, Nertherlands 1 ESA/ESTEC, Noordwijk, The Netherlands 1 Dwingeloo, Radiosterrewacht, Netherlands 1 Dwingeloo Radiosterrenwacht, Netherlands 1 Dutch Meteor Society, Netherlands 1 Comprimo, Amsterdam, Netherlands 1 Christchurch, New Zealand 1 CERN, Geneve, Switzerland 1 Amsterdam, Universieit, Netherlands 1 Amsterdam Univ., Amsterdam, Netherlands 66 113 Universidad de Chile, Santiago, Chile 126 University College, Cardiff, Wales 90 Universidad de Chile, Santiago 53 University of Texas, Austin, TX, US 53 Universidad de Chile, Santiago, Chile 26 Universita di Padova, Padova, Italy 21 University of Chicago, Chicago, IL, US 15 Universidad de Cantabria, Santander, Spain 15 Ministerio de Educacion de Chile, Santiago, Chile 14 Universidade de Sao Paulo, Sao Paulo, Brazil 13 University of Nigeria, Nsukka 13 Universidad de Puerto Rico, Rio Piedras 13 Universidad Complutense, Madrid, Spain 13 Universidad Central de Venezuela, Caracas 12 Universita di Firenze, Firenze, Italy 11 Universita di Bologna, Bologna, Italy 9 Universita di Catania, Catania, Italy 9 Universidad de Puerto Rico, San Juan 8 Universita di Milano, Milano, Italy 8 Universidade Mackenzie, Sao Paulo, Brazil 7 University of Padova, Padova, Italy 7 Universita di Roma, Rome, Italy 7 Universita di Roma, Roma, Italy 7 Univ. de Chile, Santiago, Chile 6 Universite Laval, Sainte-Foy, Canada 6 Universidad Catolica de Chile, Santiago, Chile 6 Universidad Catolica de Chile, Santiago 5 Universita di Pisa, Pisa, Italy 5 Universidad de Valencia, Valencia, Spain 5 Universidad de Chile 5 P. Univ. Catolica de Chile, Santiago, Chile 5 Instituto Isaac Newton, Santiago, Chile 4 University of Cambridge, Cambridge, UK 4 University of California, San Diego, CA, US 4 Universite Paris 7, Paris, France 4 Universita di Palermo, Palermo, Italy 4 Pontificia Univ. Catolica de Chile, Santiago, Chile 4 Ministerio de Education de Chile, Santiago, Chile 3 University of Crete, Heraklion, Greece 3 Universitat de Valencia, Valencia, Spain 3 Universitat de Valencia, Burjassot, Spain 3 Universita' di Firenze, Florence, Italy 3 Universidad de Puerto Rico, San Juan, PR 3 Pontificia Univ. Catolica, Santiago, Chile 3 Academia Sinica, Nanjing, China 3 Academia Sinica, Kunming, China 2 University of Patras, Patras, Greece 2 University of Oslo, Oslo, Norway 2 University of Athens, Athens, Greece 2 University College, Dublin 2 Universite de Nice, Nice, France 2 Universitaets-Sternwarte, Munich 2 Universitaet der Wien, Wien, Austria 2 Universita di Pavia, Pavia, Italy 2 Universita di Lecce, Napoli, Italy 2 Universidad de los Andes, Bogota, Colombia 2 Universidad de Chile, Santiago de Chile, Chile 2 Universidad Veracruzana, Jalapa, Mexico 2 Univ.de Chile, Casilla, Santiago, Chile 2 Pontificia Universidad Catolica de Chile, Santiago, Chile 2 Chili Univ., Santiago, Chile 1 University of Wales, Wales, UK 1 University of Wales, Cardiff 1 University of Sydney, Australia 1 University of Puerto Rico, Cayey 1 University of Pisa, Pisa, Italy 1 University of Palermo, Palermo, Italy 1 University of Milano, Milano, Italy 1 University of Maine, Orono, ME, US 1 University of Kobe, Kobe, Japan 1 University of Crete, Crete, Greece 1 University of Catania, Catania, Italy 1 University Colllege, Cardiff, Wales 1 University College, Cardiff, Walles 1 Universite Paris, Orsay, France 1 Universite Laval, Sainte-Foy 1 Universite Laval, Sainte Foy, Canada 1 Universita di Trieste, Munchen, Germany 1 Universita di Genova, Genova, Italy 1 Universita di Ferrara, Ferrara, Italy 1 Universita dell'Aquila, Coppito, Italy 1 Universita dell'Aquila, Aquila, Italy 1 Universita degli Studi, Rome, Italy 1 Universita de Roma, Rome, Italy 1 Universita Padova, Padova, Italy 1 Universita Firenze, Firenze, Italy 1 Universidat de Chile, Santiago 1 Universidade de Sisboa, Lisboa, Portugal 1 Universidad del Pais Vasco, Bilbao, Spain 1 Universidad de los Andes 1 Universidad de Sevilla Apartado, Sevilla, Spain 1 Universidad de Puerto Rico, Mayaguez 1 Universidad de Oriente, Cumana, Venezuela 1 Universidad de Guanajuato, Guanajuato, Mexico 1 Universidad de Cantabria, Santander 1 Universidad de Cantabria 1 Universidad Tecnica, Valparaiso, Chile 1 Universidad Tecnica del Estado, Santiago, Chile 1 Universidad Nacional, La Plata, Argentina 1 Universidad Nacional Autonoma de Mexi 1 Universidad Mackenzie, Sao Paulo, Brazil 1 Universidad Catolica de Chile, Casilla 1 Univ. de Pavia, Pavia, Italy 1 Univ. de Chile, Santiago, Chili 1 Univ. Catolica de Chile, Santiago, Chile 1 Univ. Catolica de Chile, Santiago 1 Univ. Catolica De Chile, Santiago, Chile 1 Univ de Nice, Nice, France 1 Santiago de Chile, Universidad, Chile 1 Pontifica Universidad Catolica, Santiago, Chile 1 P. Universidad Catolica de Chile, Santiago, Chile 1 Ministero de Educacion, Santiago, Chile 1 Ministerio de Educacion, Santiago, Chile 1 ESO, Casilla 19001, Santiago 19, Chile 67 13 British Columbia, University, Vancouver, Canada 230 British Columbia, University, Vancouver, Canada 193 Western Ontario, University, London, Canada 24 British Columbia Univ., Vancouver, Canada 5 Univ. of British Columbia, Vancouver, Canada 4 British Columbia University, Vancouver, Canada 3 British Columbia, University, Victoria, Canada 3 British Columbia Univ., Vancouver 2 British Columbia, University, Vancouver 2 British Columbia Univ., Vancouver, BC, Canada 1 Western Ontario University, London, Canada 1 Trinity Western University, Langley, Canada 1 British Columbia, Vancouver, Canada 1 Brigham Young University, Laie, Hawaii 68 194 Bonn, Universitaet, Bonn, West Germany 125 Wien, Universitaet, Vienna, Austria 120 Firenze, Universita, Florence, Italy 120 Bonn, Universitaet, Bonn, West Germany 101 Roma, Universita, Rome, Italy 96 Basel, Universitaet, Binningen, Switzerland 87 Sydney, University, Sydney, Australia 80 Bochum, Ruhr-Universitaet, Bochum, West Germany 59 Bologna, Universita, Bologna, Italy 56 Tuebingen, Universitaet, Tuebingen, West Germany 56 Koeln, Universitaet, Cologne, West Germany 55 Iowa, University, Iowa City 47 Wuerzburg, Universitaet, Wuerzburg, West Germany 41 Berlin, Technische Universitaet, Berlin, West Germany 35 Negev, University, Beersheba, Israel 34 Ruhr-Universitaet, Bochum, West Germany 34 Bonn, Universitaet, West Germany 33 Monash University, Clayton, Australia 26 Bern, Universitaet, Switzerland 25 Heidelberg, Universitaet, West Germany 24 Montreal, Universite, Montreal 24 Kiel, Neue Universitaet, Kiel, West Germany 24 Bochum, Ruhr-Universitaet, West Germany 23 Graz, Universitaet, Graz, Austria 23 Graz, Universitaet, Austria 22 York University, Downsview, Canada 21 Koeln, Univ., Cologne, Germany 20 Tuebingen, Universitaet, West Germany 20 Oslo, Universitetet, Norway 19 Univ. Kiel, Kiel, Germany 19 Erlangen-Nuernberg, Universitaet, Erlangen, West Germany 18 Univ. Bonn, Bonn, Germany 18 Innsbruck, Universitaet, Austria 16 Aarhus, Universitet, Aarhus, Denmark 15 Pisa, Universita, Pisa, Italy 14 Oslo, Universitetet, Oslo, Norway 13 Berlin, Technische Universitaet, West Germany 12 Tromso, Universitetet, Tromso, Norway 12 Lund, Universitet, Lund, Sweden 11 Torun, Uniwersytet, Torun, Poland 11 Muenchen, Universitaet, Munich, West Germany 10 Zuerich, Universitaet, Zurich, Switzerland 10 Universitat Kiel, Kiel, Germany 10 Aarhus Universitet, Aarhus, Denmark 9 York University, Downsview 9 Universitat Wien, Wien, Austria 9 Muenster, Universitaet, Muenster, West Germany 9 Bonn, Univ., Sternwarte, Germany 9 Basel, Universitaet, Basel, Switzerland 8 Wuerzburg, Universitaet, West Germany 8 Utah, University, Salt Lake City 8 Sternwarte der Universitaet Bonn, Bonn, Germany 8 Ruhr-Universitat Bochum, Bochum, Germany 8 Hamburg, Universitaet, Hamburg, West Germany 8 Basel, Universitaet, Switzerland 7 Universitat Bonn, Bonn, Germany 7 Mons, Universite, Mons, Belgium 7 Bonn, Universitaet, Sternwarte, Bonn, West Germany 6 Universitat Munchen, Munchen, Germany 6 Muenster, Universitaet, West Germany 6 Lodz, Uniwersytet, Lodz, Poland 6 Goettingen, Universitaets-Sternwarte, Germany 6 Bonn, Universitaet, Sternwarte, West Germany 6 Bern, Universitaet, Berne, Switzerland 5 Sofiiski Universitet, Sofia, Bulgaria 5 Ruhr-Univ. Bochum, Bochum, Germany 5 Otago, University, Dunedin, New Zealand 4 University of Bonn, Bonn, Germany 4 Universitat Muenchen, Muenchen, Germany 4 Lund, Universitet, Sweden 4 Konstanz, Universitaet, Konstanz, West Germany 4 Kent, University, Canterbury 4 Freien Universitat Berlin, Berlin, Germany 4 Bochum Ruhr-Universitaet, Bochum, West Germany 3 Universitat zu Koln, Koln, Germany 3 Universitat Tubingen, Tubingen, Germany 3 Sternwarte der Universitat Bonn, Bonn, Germany 3 Oulu, University, Oulu, Finland 3 Muenster, Universitaet, Germany 3 Muenchen, Technische Universitaet, Munich, West Germany 3 Mainz, Universitaet, West Germany 3 Lausanne, Universite, Lausanne, Switzerland 3 Kiel, Universitaet, West Germany 3 Ioannina, University, Ioannina, Greece 3 DFVLR, Wessling, West Germany 3 Cluj, Universitatea, Cluj, Rumania 3 Carl Zeiss, Oberkochen, West Germany 3 Berlin, Technische Universitat, Berlin, West Germany 3 Berlin, Freie Universitaet, Berlin, West Germany 3 Aegean University, Bornova, Turkey 2 Wurzburg, Universitat, Wurzburg, West Germany 2 Wien, Universitaet, Austria 2 Universitat-GH Siegen, Siegen, Germany 2 Universitaet Potsdam, Potsdam, Germany 2 Universitaet Dortmund, Dortmund, Germany 2 Universitaet Bonn, Bonn, Germany 2 Universitaei Wien, Wien, Austria 2 Univ. Munchen, Munchen, Germany 2 Univ. Hannover, Hannover, Germany 2 Tuebingen, Universitaet, Tuebingen 2 Technische Universitat Berlin, Berlin, Germany 2 Stuttgart, Universitaet, Stuttgart, West Germany 2 Ruhr-Universitat, Bochum, West Germany 2 Mainz, Universitaet, Mainz, West Germany 2 Lyon I, Universite, Lyons, France 2 Lunds Universitet, Lund, Sweden 2 Jena, Universitaets-Sternwarte, Germany 2 Hannover, Universitaet, Hanover, West Germany 2 Goettingen, Universitaet, West Germany 2 Giessen, Universitaet, Giessen, West Germany 2 Gdansk, Uniwersytet, Gdansk, Poland 2 Frankfurt, Universitaet, Frankfurt am Main 2 Bonn Univ., Bonn, Germany 2 Basel, Universitaet, Basel 2 Bari, Universita, Bari, Italy 2 Aarhus Universitet, Arhus, Denmark 1 Wurzburg, Universitaet, Wurzburg, West Germany 1 Wuerzbuerg, Universitaet, Wuerzburg, West Germany 1 Wolfsburg, Planetarium, West Germany 1 Wein, Universitaet, Vienna, Austria 1 Vienna, Universitaet, Wien, Austria 1 Venezia, Universita, Venice, Italy 1 University College, Galway 1 Universitat Wein, Wein, Austria 1 Universitat Postdam, Postdam, Germany 1 Universitaet zu Koln, Koln, Germany 1 Univ.-Sternwarte, Gottingen, Germany 1 Univ. Minchen, Munchen, Germany 1 Tuebingen, Univesitaet, West Germay 1 Tuebingen, Universitat, West Germany 1 Tuebingen, Universitaet, Ravensburg, West Germany 1 Tuebingen, Universitaet, Germany 1 Tuebingen Universitaet, Tuebingen, Germany 1 Tubingen, Universitat, Tubingen, West Germany 1 Torun, Universytet, Torun, Poland 1 Torun Uniwersytet, Torun, Poland 1 Thrace, University, Xanthe, Greece 1 Technical University of Berlin, Berlin, Germany 1 Tbingen, Universitt, Tbingen, West Germany 1 Sternwarte, Kiel, West Germany 1 Sofia University, Sofia, Bulgaria 1 Siegen, Universitaet-Gesamthochschule, West Germany 1 Sidney, University, Sydney, Australia 1 Ruhr-Universitat, Bochum, Germany 1 Ruhr-Univ., Bochum, Germany 1 Ruhr Universitat, Bochum, West Germany 1 Rostock, Universitaet, Rostock, East Germany 1 Rome, Universita, Rome, Italy 1 Roma, Univesita, Rome, Italy 1 Roma II, Universite, Rome, Italy 1 Radiosternwarte, Kiel, West Germany 1 Oslo, University, Oslo, Norway 1 Oslo, Universitetet, Blindern, Norway 1 Oslo, Universitet, Norway 1 Napoli, Universit1/4a, Naples, Italy 1 Muenster University, Muenster, Germany 1 Muenchen, Universitaet, Munich, Germany 1 Montreal, Universiite, Montreal 1 Montreal Universite, Montreal 1 Max Planck Inst., Bonn, Germany 1 Lausanne, Universite, Sauverny, Switzerland 1 Koen, Universitaet, Cologne, West Germany 1 Koeln, Universitaet, Cologne 1 Kobenhavn, Universitet, Copenhagen, Denmark 1 Jena, Universitaet, Germany 1 Jena, Univ.-Sternwarte, Germany 1 Inonu University, Malatya, Turkey 1 Greifswald, Universitaet, Greifswald, East Germany 1 Graz, Universitaet Austria 1 Goettingen, Universitaet, Goettingen, West Germany 1 Geneve, Universite, Geneva, Switzerland 1 Firenze Universita, Florence, Italy 1 Firenza, Universita, Florence, Italy 1 Erlangen-Nuernburg, Universitaet, Erlangen, West Germany 1 Erlangen-Nuernberg Universitaet, Erlangen, West Germany 1 Ege University, Bornovo, Turkey 1 ESO, Garching, West Germany 1 ESA Porz-Wahn, West Germany 1 Dijon, Universite, Dijon, France 1 Bonn, Universitat, Bonn, West Germany 1 Bonn, Universitaet,, Bonn, West Germany 1 Bonn, Universitaet, Sternwarte, Daun, West Germany 1 Bonn, Universitaet, Bonn 1 Bochum, Ruhr Universitaet, Bochum, West Germany 1 Bochcum, Ruhr-Universitaet, Bochum, West Germany 1 Besancon, Universite, Besancon, France 1 Bern, Universitat, Switzerland 1 Berlin, Humboldt-Universitaet, Berlin, East Germany 1 Berlin Technische Universitaet, Berlin, West Germany 1 Basel, Universitaet,, Binningen, Switzerland 1 Basel, Universitaet, Benningen, Switzerland 1 Basel Universitaet, Switzerland 1 Basel Universitaet, Basel, Switzerland 1 Athens University, Zografos, Greece 1 Aarhus University, Munchen, Germany 69 45 CNR, Istituto di Fisica Cosmica, Milan, Italy 132 CNR, Istituto di Fisica Cosmica, Milan, Italy 12 CNR, Ist. di Fisica Cosmica, Milan, Italy 11 CNR, Istituto di Radioastronomia, Italy 11 CNR, Istituto di Fisica Cosmica e Informatica, Palermo, Italy 9 CNR, Istituto di Cosmogeofisica, Turin, Italy 6 Instituto di Fisica Cosmica del CNR, Milano, Italy 6 CNR, Istituto di Fisica Cosmica 5 CNR, Istituto di Fisica Cosmica, Milan 5 CNR, Istituto di Cosmogeofisica 5 CNR, Istituto di Cosmo-Geofisica, Turin, Italy 5 CNR, Ist. di Fisica Cosmica, Milan 4 CNR, Laboratorio di Fisica Cosmica, Milan, Italy 4 CNR, Istituto di Fisica dell'Atmosfera, Rome, Italy 4 CNR, Istituto di Fisica Cosmica e Tecnologie Relative, Milan, Italy 4 CNR, Istituto di Cosmo-geofisica 3 Istituto di Fisica Cosmica del CNR, Milano, Italy 3 CNR, Istituto di Cosmo-Geofisica 2 Dipartimento di Fisica, Pisa, Italy 2 Dipartimento di Fisica dell'Univ., Milano, Italy 2 CNR, Istituto di Astrofisica Spaziale, Rome 2 CNR, Ist. di Cosmogeofisica, Turin, Italy 2 CNR, Instituto di Fisica dell'Atmosfera, Rome, Italy 1 Istituto di Fisica del'Univesita, Palermo, Italy 1 Istituto di Fisica del CNR, Milano, Italy 1 Istituto di Fisica Generale, Turin, Italy 1 Istituto di Fisica Generale, Torino, Italy 1 Istituto di Fisica Cosmica, CNR, Milano, Italy 1 Istituto di Fisica Cosmica del C.N.R., Milano, Italy 1 Istituto di Fisica A. Righi, Bologna, Italy 1 Instituto di Fisica Cosmica, Milano, Italy 1 Institut di Fisica Cosmica del CNR, Milano, Italy 1 CNR, Laboratorio Fisica Cosmica, Milan, Italy 1 CNR, Istituto per la Fisica dell'Atmosfera, Rome, Italy 1 CNR, Istituto di Radioastronomia, Noto 1 CNR, Istituto di Fisica della Atmosfera, Rome, Italy 1 CNR, Istituto di Fisica Cosmica, Italy 1 CNR, Istituto di Fisica Cosmica ed Informatica, Palermo, Italy 1 CNR, Istituto di Elettronica Quantistica, Florence, Italy 1 CNR, Istituto di Cosmo-geofisica, Turin, Italy 1 CNR, Istituto di Astrofisica Spaziale 1 CNR, Istituto Plasma Spazio, Frascati, Italy 1 CNR, Istituto Nazionale di Fisica Nucleare, Pisa, Italy 1 CNR, Ist. di Radioastronomia, Medicina, Italy 1 CNR, Ist. di Fisica dell'Atmosfera, Rome, Italy 1 CNR, Gruppi Italiani di Fisica Cosmica, Palermo, Italy 70 47 Astronomiska Observatoriet, Uppsala, Sweden 171 Astronomiska Observatoriet, Uppsala, Sweden 123 Stockholms Observatorium, Saltsjobaden, Sweden 117 Tokyo Astronomical Observatory, Mitaka, Japan 46 Onsala Space Observatory, Onsala, Sweden 24 Astronomical Observatory, Uppsala, Sweden 20 Astronomiska Observatorium, Uppsala, Sweden 17 Astronomska Opservatorija, Belgrade, Yugoslavia 6 Uppsala Astronomical Observatory, Uppsala, Sweden 6 Onsala, Rymdobservatorium, Onsala, Sweden 6 Astronomicheskaia Observatoriia, Leningrad, USSR 4 Astronomical Observatory, Krakow, Poland 3 Stockholms Observatorium, Saltsjobaden 3 Astronomisk Observatorium, Brorfelde, Denmark 3 Astronomical Observatory, Padua, Italy 3 Astronomical Observatory, Istanbul, Turkey 2 Uppsala, Universitet, Uppsala, Sweden 2 Uppsala Observatory, Uppsala, Sweden 2 Stockholm, Observatorium, Saltsjobaden, Sweden 2 Stockholm Observatory, Salsjobaden, Sweden 2 Stockholm Observatorium, Saltsjobaden, Sweden 2 Astronomiske Observatorium, Tollose, Denmark 2 Astronomiska observatoriet, Uppsala, Sweden 2 Astronomiska Observatoriet, Uppsala 2 Astronomical Observatory, Tollose, Denmark 2 Astronomical Observatory, Poznan, Poland 1 Uppsala, Astronomiska Observatorium, Uppsala, Sweden 1 Uppsala Astronomiska Observatorium, Uppsala, Sweden 1 Stockholms Observatorium,Saltsjobaden, Sweden 1 Stockholm Observatory, Sweden 1 Stockholm Observatory, Stockholm, Sweden 1 Astronomy Observatory, Socorro, NM 1 Astronomska Observatorija, Belgrade, Yugoslavia 1 Astronomska Observatoriet, Uppsala, Sweden 1 Astronomiska observatoriet, Box 515, S-751 20 Uppsala, Sweden 1 Astronomiska observatoriet, Box 515, S--75120 Uppsala, Sweden 1 Astronomiska Opservatorija, Belgrade, Yugoslavia 1 Astronomiska Observatorium, Uppsala 1 Astronomiska Observatoriet, Upssala, Sweden 1 Astronomisk Observatorium, Tollose, Denmark 1 Astronomiczne Obserwatorium, Warsaw, Poland 1 Astronomical Observatory, Wroclaw, Poland 1 Astronomical Observatory, Warsaw, Poland 1 Astronomical Observatory, Lake Tekapo 1 Astronomical Observatory, Italy 1 Astronomical Observatory, Helsinki, Finland 1 Astronomical Observatory, Belgrade, Serbia 1 Astronomical Observatory, Baghdad, Iraq 71 158 Osservatorio Astronomico di Brera, Merate, Italy 160 Osservatorio Astronomico, Trieste, Italy 148 Osservatorio Astrofisico, Asiago, Italy 139 Osservatorio Astronomico, Padua, Italy 121 Torino, Osservatorio Astronomico, Turin, Italy 108 Osservatorio Astronomico, Bologna, Italy 99 Roma, Osservatorio Astronomico, Rome, Italy 85 Osservatorio Astronomico di Capodimonte, Naples, Italy 82 Padova, Osservatorio Astronomico, Padua, Italy 80 Osservatorio Astronomico di Brera, Merate, Italy 74 Osservatorio Astrofisico, Catania, Italy 60 Trieste, Osservatorio Astronomico, Trieste, Italy 59 Observatorio Astronomico, La Plata, Argentina 54 Osservatorio Astronomico di Brera, Milan, Italy 53 Observatorio Astronomico, Cordoba, Argentina 46 Osservatorio Astronomico, Rome, Italy 46 Osservatorio Astronomico, Palermo, Italy 39 Torino, Osservatorio Astronomico, Pino Torinese, Italy 33 Osservatorio Astrofisico di Arcetri, Firenze, Italy 26 Osservatorio Astronomico di Monte Mario, Rome, Italy 25 Osservatorio Astronomico di Brera, Milano, Italy 20 Osservatorio Astronomico di Trieste, Trieste, Italy 19 Osservatorio Astronomico di Torino, Pino Torinese, Italy 19 Osservatorio Astronomico Universitario, Bologna, Italy 17 Osservatorio Astronomico di Padova, Padova, Italy 16 Osservatorio Astronomico di Collurania, Teramo, Italy 15 Osservatorio Astronomico Collurania, Teramo, Italy 14 Osservatorio Astronomico di Bologna, Bologna, Italy 13 Palermo, Osservatorio Astronomico, Palermo, Italy 12 Osservatorio Astronomico su Monte Mario, Rome, Italy 12 Observatorio Astronomico, La Plata 11 Osservatorio Astronomico, Turin, Italy 10 Osservatorio Astronomico, Padova, Italy 10 Osservatorio Astronomico, Italy 9 Osservatorio Astronomico di Capodimonte 8 Roma, Osservatorio Astronomico, Monte Porzio, Italy 8 Osservatorio Astronomico di Roma, Roma, Italy 8 Osservatorio Astrofisico, Padua, Italy 8 Osservatorio Astrofisico, Italy 7 Osservatorio Astronomico, Merate, Italy 6 Osservatorio Astronomico, Padua 6 Osservatorio Astronomico di Capodimonte, Napoli, Italy 6 Osservatorio Astronomico di Brera 6 Milano, Osservatorio Astronomico, Merate, Italy 5 Roma, Osservatorio Astronomico, Monteporzio, Italy 5 Osservatorio di Brera, Milano, Italy 5 Osservatorio Astronomico di Roma, Monteporzio, Italy 5 Osservatorio Astrofisico di Catania, Catania, Italy 5 Observatorium Astronomiczne, Warsaw, Poland 5 Observatorio Astronomico, Santiago de Compostela 5 Observatorio Astronomico, Bogota, Colombia 5 Observatorio Astronomico de Cerro Calan, Santiago, Chile 5 Observatorio Astronomico Nacional, Granada, Spain 5 Observatoire Astronomique du Mont Megantic 5 Istituto e Osservatorio Astronomico di Palermo, Palermo, Italy 5 Arcetri, Osservatorio Astronomico, Florence, Italy 4 Osservatorio Astronomico di Torino, Torino, Italy 4 Osservatorio Astronomico di Roma, Rome, Italy 4 Osservatorio Astronomico di Collurania, Teramo 4 Osservatorio Astronomico di Brera, Milan 4 Osservatorio Astrofisica di Arcetri, Firenze, Italy 3 Padova, Osservatorio Astronomico, Asiago, Italy 3 Osservatorio di Collurania, Teramo, Italy 3 Osservatorio Astronomico, Rome 3 Osservatorio Astronomico, Catania, Italy 3 Osservatorio Astronomico di Padova, Asiago, Italy 3 Osservatorio Astronomico di Collurania, I-64100, Teramo, Italy 3 Osservatorio Astronomico di Bologna, Italy 3 Osservatorio Astronomico de Brera, Milano, Italy 3 Osservatorio Astrofisica di Catania, Catania, Italy 3 Osservatario Astronomico di Bologna, Bologna, Italy 3 Observatorium Astronomiczne, Krakow, Poland 3 Observatorio Astronomico, Laprida, Argentina 3 Observatorio Astronomico de Cordoba, Cordoba, Argentina 3 Istitutoe Osservatorio Astronomico di Palermo, Palermo, Italy 2 Osservatorio di Arcetri, Firenze, Italy 2 Osservatorio Astronomico, Trieste 2 Osservatorio Astronomico, Roma, Italy 2 Osservatorio Astronomico, Asiago, Italy 2 Osservatorio Astronomico di Torino, Turin, Italy 2 Osservatorio Astronomico di Torino, Torinese, Italy 2 Osservatorio Astronomico di Roma, Monte Porzio, Italy 2 Osservatorio Astronomico di Roma, Italy 2 Osservatorio Astronomico di Roma, 00040 Monte Porzio, Italy 2 Osservatorio Astronomico di Collurania, I-64100 Teramo, Italy 2 Osservatorio Astronomico di Brera-Merate, Milano, Italy 2 Osservatorio Astronomico de Brera, Milan, Italy 2 Osservatorio Astronomica di Capodimonte, Napoli, Italy 2 Osservatorio Astron. di Torino, Pino Torinese, Italy 2 Osservatorio Astrofisico, Catania 2 Osservatorio Astrofisico, Arcetri, Italy 2 Osservatorio Astrofisico di Arcetri, Firenze, Germany 2 Osservatorio Astrofisco di Catania, Catania, Italy 2 Observatorio Astronomico, Santiago, Chile 2 Observatorio Astronomico, Cordoba 2 Observatorio Astronomico di Collurania, Teramo, Italy 2 Observatorio Astronomico Nacional, Yebes, Spain 2 Observatorio Astronomico Cerro Calan, Santiago, Chile 2 Brera, Osservatorio Astronomico, Milan, Italy 2 Asiago, Osservatorio Astronomico, Padua, Italy 2 Asiago, Osservatorio Astronomico, Asiago, Italy 1 Trieste, Osservatorio Astronoico, Trieste, Italy 1 Torino Osservatorio Astronomico, Turin, Italy 1 Teramo, Osservatorio Astronomico, Teramo, Italy 1 Roma, Osservatorio Astronomico, Monteporzio Catone, Italy 1 Roma, Osservatorio Astronomico, Frascati, Italy 1 Padua, Osservatorio Astronomico, Padova, Italy 1 Osservatorio, Astronomico, Bologna, Italy 1 Osservatorio di Torino, Torino, Italy 1 Osservatorio di Torino, Pino Torinese, Italy 1 Osservatorio di Capodimonte, Napoli, Italy 1 Osservatorio di Brera, Milan, Italy 1 Osservatorio Collurania, Teramo, Italy 1 Osservatorio Astronomico, Pino Torinese, Italy 1 Osservatorio Astronomico, Milan, Italy 1 Osservatorio Astronomico, Frascati, Italy 1 Osservatorio Astronomico, Cordoba, Argentina 1 Osservatorio Astronomico di Trieste, Trieste, IT 1 Osservatorio Astronomico di Roma, I-00040 Monte Porzio, Italy 1 Osservatorio Astronomico di Pavdova, Padova, Italy 1 Osservatorio Astronomico di Padova, Sede di Asiago, Italy 1 Osservatorio Astronomico di Padova, Italy 1 Osservatorio Astronomico di Capodimonte, Naples 1 Osservatorio Astronomico di Capodimonte, Italy 1 Osservatorio Astronomico di Brera, Merate 1 Osservatorio Astronomico di Brera I-22055, Merate, Italy 1 Osservatorio Astronomico de Monte Mario, Rome, Italy 1 Osservatorio Astronomico de Capodimonte, Naples, Italy 1 Osservatorio Astronomico de Brera, Merate, Italy 1 Osservatorio Astronomico Collurania, Teramo 1 Osservatorio Astronomica di Brera, Merate, Italy 1 Osservatorio Astron. di Brera, Milano, US 1 Osservatorio Astron. di Brera, Milano, Italy 1 Osservatorio Astron. di Bologna, Bologna, Italy 1 Osservatorio Astrofisico, Palermo, Italy 1 Osservatorio Astrofisico, Padova, Italy 1 Osservatorio Astrofisico, Assiago, Italy 1 Osservatorio Astrofisico di Cantania, Italy 1 Osservatorio Astrofisico di Aretri, Firenze, Italy 1 Osservatorio Astrofisico di Arcetri, Italy 1 Osservatorio Astrofisico di Arcetri, Florence, Italy 1 Osservatorio Astrofisica, Asiago, Italy 1 Osservatorio Astrofisco di Arcetri, Firenze, Italy 1 Osservatorio Astrofiscio di Arcetri, Firenze, Italy 1 Osservatorio Astornomico Collurania, Teramo, Italy 1 Osservatoria Astrofisico, Catania, Italy 1 Osservartorio Astronomico di Padova, Italy 1 Obsservatorio Astronomico di Trieste, Trieste, Italy 1 Observatorium Astronomiczne, Torun, Poland 1 Observatorio Astronomico, San Juan, Argentina 1 Observatorio Astronomico, Bogota, Columbia 1 Observatorio Astronomico di Trieste, Trieste, Italy 1 Observatorio Astronomico de Cerro Calan 1 Observatorio Astronomico La Silla, La Serena, Chile 1 Observatorio Astronomico Felix Aguilar 1 Observatorio Astrofisico di Brera, Milano, Italy 1 Observatario Astronomico di Padova, Padova, Italy 1 Napoli, Osservatorio Astronomico, Naples, Italy 1 Merate, Osservatorio Astronomico, Merate, Italy 72 25 Sao Paulo, Universidade, Sao Paulo, Brazil 150 Sao Paulo, Universidade, Brazil 55 Sao Paulo Univ., Brazil 51 Sao Paulo, Universidade, Sao Paulo, Brazil 14 Univ. de Sao Paulo, Sao Paulo, Brazil 12 Santa Maria, Universidade Federal, Brazil 7 Stockholm, Universitet, Stockholm, Sweden 5 Porto, Universidade, Porto, Portugal 4 Zulia, Universidad, Maracaibo, Venezuela 3 Sao Paolo, Universidade, Brazil 3 La Laguna, Universidad, La Laguna, Spain 2 Sao Paulo, Univ., Brazil 2 Rio de Janeiro, Universidade Federal, Brazil 2 Campinas, Universidade Estadual, Brazil 1 Toulon, Universite, La Garde, France 1 Sao Paulo, Universidad, Brazil 1 Sao Paulo, Univ. do Estado, Brazil 1 Sao Paulo Universidade, Brazil 1 Puerto Rico, Universidad, Rio Piedras 1 Porto, Universidade, Oporto, Portugal 1 Pernambuco, Universidade Federal, Recife, Brazil 1 Paraiba, Universidade Federal, Joao Pessoa, Brazil 1 Pais Vasco, Universidad, San Sebastian, Spain 1 Londrina, Universidade Estadual, Brazil 1 Instituto de Fisica Teorica, Sao Paulo, Brazil 1 De Paul University, Chicago, Ill. 73 18 Australia Telescope National Facility, Epping 57 Australia Telescope National Facility, Epping 22 CSIRO, Australia Telescope National Facility, Epping 14 Australia Telescope National Facility, Epping, Australia 11 Australia Telescope National Facility, Epping, NSW, Australia 3 The Australia Telecope National Facility, Epping, Australia 3 CSIRO, Australia Telescope National Facility, Parkes 3 Australia Telescopes National Faciltiy, Epping, Australia 3 Australia Telescope National Facility, Parkes, NSW, Australia 3 Australia Telescope National Facility, Parkes 2 Australian Telescope National Facility, Epping, Australia 2 Australian Telescope National Facility, CSIRO, Epping, Australia 2 Australia Telescope National Facility, Narrabri 1 Australia Telescope, Epping, Australia 1 Australia Telescope National Facility, Parkes, Australia 1 Australia Telescope National Facility, Narrabri, Australia 1 Australia Telescope National Facility, Narrabi 1 Australia Telescope National Facility, Epping NSW, Australia 1 Australia Telescope National Facility, CSIRO, Epping, Australia 74 22 Brussel, Vrije Universiteit, Brussels, Belgium 133 Brussel, Vrije Universiteit, Brussels, Belgium 33 Leuven, Katholieke Universiteit, Heverlee, Belgium 25 Leuven, Katholieke Universiteit, Louvain, Belgium 8 Bruxelles, Univ. Libre, Brussels, Belgium 8 Brussel, Vrije Univ., Brussels, Belgium 5 Leuven, Katholieke Universiteit, Leuven, Belgium 2 Royal Belgian Observatory, Brussels, Belgium 2 Brussel Vrije Universiteit, Brussels, Belgium 1 Vrije Universiteit, Brussels, Belgium 1 Leuven, Katholieve Universiteit, Louvain, Belgium 1 Leuven, Katholieke Universiteit, Louvain, Belguim 1 Leuven, Katholieke Universiteit Louvain, Belgium 1 Leuven, Katholieke Universiteit , Louvain, Belgium 1 Leuven, Katholieke Universiteir, Heverlee, Belgium 1 Brussels, Free University, Brussels, Belgium 1 Brussels Free Univ., Belgium 1 Brussel, Vrije Universiteit, Brussel, Belgium 1 Brussel, Vrije Universiteit , Brussels, Belgium 1 Brussel, Vrije Universiteit 1 Brussel, Vrije Universitaet, Brussels, Belgium 1 Brussel, Universiteit, Brussels, Belgium 1 Brussel Vrije Univ., Brussels, Belgium 75 9 Victoria, University, Victoria, British Columbia, Canada 61 Victoria, University, Victoria, British Columbia, Canada 4 Climenhaga Observatory, Victoria, British Columbia, Canada 3 Simon Fraser University, Burnaby, British Columbia, Canada 2 Victoria, University, Victoria, Canada 2 Victoria, University, Observatory, Victoria, British Columbia, Canada 2 University of Victoria, British Columbia, Canada 1 Victoria, University Observatory, Victoria, British Columbia, Canada 1 Univ. of Victoria, Victoria, British Columbia, Canada 1 Simon Frazer University, Burnaby, British Columbia, Canada 76 14 Aerospace Corp., Space Sciences Laboratory, Los Angeles, CA 54 Aerospace Corp., Space Sciences Laboratory, Los Angeles, CA 14 Aerospace Corp., Space Sciences Laboratory, Los Angeles, Calif. 6 Aerospace Corp., Space Sciences Laboratory, Los Angeles 5 Aerospace Corp., Electronics Research Laboratory, Los Angeles, Calif. 3 Aerospace Corp., Space Sciences Laboratory, El Segundo, Calif. 3 Aerospace Corp., Ivan A. Getting Laboratories, Los Angeles, Calif. 3 Aerospace Corp., Electronics Research Laboratory, Los Angeles, CA 2 Aerospace Corp., Space Science Laboratory, Los Angeles, CA 1 The Aerospace Corp., Space Sciences Laboratory, Los Angeles, CA 1 Aerospace Corp., Space Sciences, Laboratory, Los Angeles, CA 1 Aerospace Corp., Space Sciences Laboratory, Los Angeles Calif. 1 Aerospace Corp., Space Sciences Laboratory, El Segundo, CA 1 Aerospace Corp., Space Science Laboratory, Los Angeles, Calif. 1 Aerospace Corp., Space Physics Laboratory, Los Angeles, Calif. 77 28 CNR, Laboratorio di Radioastronomia, Bologna, Italy 223 CNR, Istituto di Radioastronomia, Bologna, Italy 44 CNR, Laboratorio di Radioastronomia, Bologna, Italy 22 CNR, Ist. di Radioastronomia, Bologna, Italy 13 Istituto di Radioastronomia del CNR, Bologna, Italy 6 CNR, Istituto de Radioastronomia, Bologna, Italy 4 CNR, Istituto di Radioastronomia, Bologna 4 CNR, Ist. di Radioastronomia, Italy 3 Istituto di Radioastronomia, Bologna, Italy 3 CNR, Laboratorio di Cosmogeofisica, Turin, Italy 3 CNR, Ist. di Radioastronomia, Noto, Italy 2 Istituto di Radioastronomia C.N.R., Bologna, Italy 2 Dipartimento di Astronomia, Bologna, Italy 2 CNR, Laboratorio di Cosmo-geofisica, Turin, Italy 1 Univ. and Inst. di Radioastronomia CNR, Bologna, Italy 1 Istituto di Radioastronomia-C.N.R., Bologna, Italy 1 Istituto de Radioastronomia, Bologna, Italy 1 Inst. di Radioastronomia, Bologna, Italy 1 ENEA, Laboratorio Dati Nucleari, Bologna, Italy 1 Dipartimento d Astronomia, Bologna, Italy 1 Dipart. di Astronomia, Bologna, Italy 1 CNR, Laboratorio di Radioastronomia, Bologna 1 CNR, Laboratorio di Radioastronomia 1 CNR, Laboratorio di Radio Astronomia, Bologna, Italy 1 CNR, Laboratoria di Cosmogeofisica, Turin, Italy 1 CNR, Istituto di Radioastronomio, Bologna, Italy 1 CNR, Istituto di Radioastronimia, Bologna, Italy 1 CNR, Istituto di Radio Astronomia, Bologna, Italy 1 CNR, Istituto di Radiastronomia, Bologna, Italy 78 18 Manchester, Victoria University, Manchester, England 155 Manchester, Victoria University, England 145 Manchester, Victoria University, Manchester, England 139 Manchester, Victoria University, Jodrell Bank, Ches., England 136 Manchester, Victoria University, Jodrell Bank, England 14 Manchester, Victoria Univ., United Kingdom 12 Manchester Victoria Univ., United Kingdom 3 Manchester, Victoria University, United Kingdom 3 Manchester, Victoria University, Macclesfield, Ches., England 2 Wellington, Victoria University, New Zealand 2 Manchester, Victoria, University, Jodrell Bank, Ches., England 2 Manchester, Victoria University, Manchester 2 Manchester, University, Jodrell Bank, England 1 lManchester, Victoria University, Jodrell Bank, Ches., England 1 Manchester, Victoria University, Machester, England 1 Manchester, Victoria University, Jordell Bank, England 1 Leicester, Universtity, Leicester, England 1 Leicester, University, University, Leicester, England 1 Leicester, University, Leicester England 79 17 Edinburgh, Royal Observatory, U.K. Infrared Telescope Unit, Hilo, HI 98 Edinburgh, Royal Observatory, U.K. Infrared Telescope Unit, Hilo, HI 7 Edinburgh Royal Observatory, U.K. Infrared Telescope Unit, Hilo, HI 2 Edinburgh, Royal Observatory, U.K. Infrared Telescope Unit, Hilo 2 Edinburg, Royal Observatory, U.K. Infrared Telescope Unit, Hilo, HI 1 Edingburgh, Royal Observatory, U.K. Infrared Telescope Unit, Hilo, HI 1 Edinburgh, Royal Observatory, UK, Infrared Telescope Unit, Edinburgh, Scotland 1 Edinburgh, Royal Observatory, UK Infrared Telescope Facility, Hilo, HI 1 Edinburgh, Royal Observatory, U.K.Infrared Telescope Unit, Hilo, HI 1 Edinburgh, Royal Observatory, U.K. Schmidt Telescope Unit 1 Edinburgh, Royal Observatory, U.K. Infrared Telescope Unit, Mauna Kea, HI 1 Edinburgh, Royal Observatory, U.K. Infrared Telescope Unit, Hilo, MI 1 Edinburgh, Royal Observatory, U.K. Infrared Telescope Unit, Hilo, Hawaii 1 Edinburgh, Royal Observatory, U.K. Infrared Telescope Unit, Edinburgh, Scotland 1 Edinburgh, Royal Observatory, U.K. Infrared Telescope Unit 1 Edinburgh, Royal Observatory, U. K. Infrared Telescope Unit, Hilo, HI 1 Edinburgh, Observatory, U.K. Infrared Telescope Unit, Hilo, HI 1 Edinburgh Royal Observatory, United Kingdom Infrared Telescope, Hilo, HI 80 23 Institut de Radioastronomie Millimetrique, Saint-Martin-d'Heres, France 63 Institut de Radioastronomie Millimetrique, Saint-Martin-d'Heres, France 29 Inst. de Radioastronomie Millimetrique, Saint-Martin-d'Heres, France 14 Institut de Radio Astronomie Millimetrique, Grenoble, France 7 Institut de Radioastronomie Millimetrique, Grenoble, France 7 Institut de Radio Astronomie Millimetrique, Saint-Martin-d'Heres, Isere, France 6 Inst. de Radioastronomie Millimetrique, St.-Martin-d'Heres, France 5 Institut de Radio Astronomie Millimetrique, Saint-Martin-d'Heres, France 4 Inst. de Radio Astronomie Millimetrique, St. Martin d'Heres, France 2 Institut de Radioastronomie Millimetrique, Saint-Martin d'Heres, France 2 Institut de Radioastronomie Milimetrique, Saint-Martin-d'Heres, France 1 Institut de Radioastronomie, Millimetrique, Saint-Martin-d'Heres, France 1 Institut de Radioastronomie Millimetrique, St. Martin d'Heres, France 1 Institut de Radioastronomie Millimetrique, St, Martin d'Heres, France 1 Institut de Radioastronomie Millimetrique, Saint-Martin-d'Heves, Isere, France 1 Institut de Radioastronomie Millimetrique, Saint-Martin-d'Heres, Isere, France 1 Institut de Radioastronomie Milimetrique, St. Martin d'Heres, France 1 Institut de Radio Astronomie Millimetrique, St. Martine d'Heres, France 1 Institut de Radio Astronomie Millimetrique, St. Martin d'Heres, France 1 Institut de Radio Astronomie Millimetrique, Saint-Martin-d'Heres, Iseere, France 1 Institut de Radio Astronomie Millimetrigue, Saint-Martin-d'Heres, Isere, France 1 Inst. de Radioastronomie Millimetrique, St. M. d'Heres, France 1 Inst. de Radio Astronomie Millimetrique, Saint Martin, France 1 CERMO, Institut de Radioastronomie Millimetrique, Saint-Martin-d'Heres, France 81 10 Technion - Israel Institute of Technology, Haifa, Israel 73 Technion - Israel Institute of Technology, Haifa 52 Technion - Israel Institute of Technology, Haifa, Israel 11 Technion - Israel Inst. of Technology, Haifa 4 Technion - Israel Institute of Technology 3 Technion-Israel Institute of Technology, Haifa, Israel 3 Technion Israel Institute of Technology, Haifa, Israel 2 Israel Inst. of Tech., Haifa, Israel 1 Technion Israel Institute of Technology, Haifa 1 Technion Israel Inst. of Tech., Haifa, Israel 1 Technion - Israel Inst. of Technology 82 55 National Radio Astronomy Observatory, Charlottesville, VA 520 National Radio Astronomy Observatory, Charlottesville, VA 365 National Radio Astronomy Observatory, Socorro, NM 218 National Radio Astronomy Observatory, Green Bank, W. Va. 138 National Radio Astronomy Observatory, Charlottesville, Va. 83 National Radio Astronomy Observatory, Socorro, NM, US 83 National Radio Astronomy Observatory, Green Bank, WV 54 National Radio Astronomy Observatory, Tucson, AZ 48 National Radio Astronomy Observatory, Socorro, N. Mex. 31 National Radio Astronomy Observatory, Charlottesville, VA, US 22 National Radio Astronomy Observatory 20 National Radio Astronomy Observatory, Charlottesville 14 Leander McCormick Observatory, Charlottesville, VA 13 Leander McCormick Observatory, Charlottesville, Va. 12 National Radio Astronomy Observatory, Tucson, Ariz. 8 National Radio Astronomy Observatory, Soccoro, NM 7 National Radio Astronomy Observatory, Socorro 6 National Radio Astronomy Observatory, Tucson, AZ, US 5 National Radio Astronomy Observatory, Green Bank, WV, US 4 National Optical Astronomy Observatory, Tucson, AZ, US 2 National Radio Astronomy Observatory, Socorro, NM 87801-0387, USA 2 National Radio Astronomy Observatory, Soccoro, NM, US 2 National Radio Astronomy Observatory, Greenbank, WV 2 National Radio Astronomy Observatory, Green Bank, W.Va. 2 National Radio Astronomy Observatory, Charolottesville, VA 2 National Radio Astronomy Observatory, Charlottsville, VA, US 2 National Radio Astronomy Observatory, Charlottesville, WV 2 National Radio Astronomy Observatory, Charlotsville, VA, US 2 National Radio Astronomy Observatory, Charlotesville, VA 2 Nationa Radio Astronomy Observatory, Charlottesville, VA, US 2 Nat. Radio Astronomy Observatory, Socorro, NM, US 2 Leander J. McCormick Observatory, Charlottesville, VA 1 Natitonal Radio Astronomy Observatory, Charlottesville, VA 1 National Radio Atronomy Observatory, Tucson, AZ, US 1 National Radio Astronomy, Observatory, Socorro, NM 1 National Radio Astronomy Observatory, VLA, Socorro, NM 87801, USA 1 National Radio Astronomy Observatory, Tucscon, Ariz. 1 National Radio Astronomy Observatory, Socorro, New Mexico, US 1 National Radio Astronomy Observatory, Socorro, New Mexico 8701, USA 1 National Radio Astronomy Observatory, Socorro, NM and Charlottesville, VA 1 National Radio Astronomy Observatory, Socorro, NM 87801, USA 1 National Radio Astronomy Observatory, Soccoro, N. Mex. 1 National Radio Astronomy Observatory, Charlottesville, Virginia, US 1 National Radio Astronomy Observatory, Charlottesville, Va 1 National Radio Astronomy Observatory, Charlottesville, VA 22901, USA 1 National Radio Astronomy Observatory, Charlottesvill, VA, US 1 National Radio Astronomy Observatory, Charlottesvile, VA 1 National Radio Astronomy Observatory Charlottesville, Va. 1 National Radio Astronomy Laboratory, Socorro, NM, US 1 National Radio Astronomy Laboratory, Socorro, NM 1 National Astronomy Observatory, Charlottesville, VA 1 Nat. Radio Astronomy Observatory, Charlottesville, VA, US 1 Nat. Radio Astronomy Observ., Charlottesville, VA, US 1 Nat. Radio Astronomy Obser., Charlottesville, VA, US 1 Nat. Radio Astron. Observ., Charlottesville, VA, US 1 Nat'l Radio Astronomy Observ., Charlottesville, VA, US 83 12 Rensselaer Polytechnic Institute, Troy, NY 64 Rensselaer Polytechnic Institute, Troy, NY 21 Rensselaer Polytechnic Institute, Troy, N.Y. 7 Rensselaer Polytechnic Inst., Troy, NY, US 7 Rensselaer Polytechnic Inst., Troy, NY 5 Rensselaer Polytechnic Institute, Troy, NY, US 4 Rennselaer Polytechnic Institute, Troy, NY 1 Rensselaer Polytechnic Institute, Troy, New York, US 1 Rensselaer Polytechnic Institute, Troy 1 Polytechnic Institute, Troy, NY, US 1 Manchester Polytechnic, United Kingdom 1 Lunar and Planetary Institute, Tucson, AZ 1 California State Polytechnic Institute, Pomona, CA 84 165 Jerusalem, Hebrew University, Israel 521 Texas, University, Austin 219 Durham, University, England 166 Leicester, University, England 163 Massachusetts, University, Amherst 99 Tel Aviv University, Israel 56 Jerusalem, Hebrew University, Israel 54 Trieste, Universita, Italy 54 New Hampshire, University, Durham 54 Johns Hopkins University 52 Jerusalem, Hebrew University, Jerusalem, Israel 46 Saint Andrews, University, Scotland 46 Delaware, University, Newark 41 Southampton, University, England 34 Pisa, Universita, Italy 34 Massachusetts, University 32 Rochester, University, NY 29 Sussex, University, Brighton 28 Montpellier II, Universite, France 25 Waterloo, University, Canada 25 New Hampshire, University, Durham, NH 22 Keele, University, England 20 Tel Aviv Univ., Israel 19 Pennsylvania, University 19 Paris VII, Universite, Paris 17 Lecce, Universita, Italy 17 Berlin, Technische Universitaet 16 New Hampshire, University, Durham, N.H. 13 Torun, University, Poland 13 Nebraska, University, Lincoln 12 Delhi, University, India 11 South Florida, University, Tampa 11 Brandon University, Canada 10 Toyama University, Japan 10 Tokyo Metropolitan University, Japan 10 Montreal, Universite, Canada 9 Brussel, Vrije Universiteit, Brussels 8 Santander, Universidad, Spain 8 L'Aquila, Universita, Italy 7 Perugia, Universita, Italy 7 Jerusalem, Hebrew University 7 Hiroshima University, Japan 7 Bristol, University, England 6 The Hebrew University, Jerusalem, Israel 6 Jerusalem Hebrew Univ., Israel 6 Heidelberg, Universitaet 6 Ankara, University, Turkey 5 Yamagata University, Japan 5 Regina, University, Canada 5 Newcastle upon Tyne, University, England 5 New Orleans, University, LA 5 Kobe Women's University, Japan 5 Cornell University, Ithaca 5 Bochum, Ruhr-Universitaet 5 Alaska, University, Fairbanks 4 Stockholm, Universitet, Sweden 4 Miyazaki University, Japan 4 Messina, Universita, Italy 4 Louisville, University, KY 4 Lille I, Universite, France 4 Hirosaki University, Japan 4 Hebrew Univ., Jerusalem, Israel 4 Athens, National University, Greece 3 Utsunomiya University, Japan 3 The Hebrew Univ., Jerusalem, Israel 3 Tennessee, University, Knoxville 3 Saint Mary's University, Halifax 3 Osaka Kyoiku University, Japan 3 Osaka City University, Japan 3 Newcastle-upon-Tyne, University, England 3 Mashhad, Ferdowsi University, Iran 3 Kingston, Queen's University, Canada 3 Kagoshima University, Japan 3 Ibaraki University, Mito 3 Grenoble I, Universite, France 3 Connecticut, University, Storrs 3 Bruxelles, Universite Libre 2 Warsaw, University, Poland 2 The Hebrew Univ. of Jerusalem, Israel 2 Sussex University, Brighton 2 Stockholm, University, Sweden 2 Seattle Pacific University, WA 2 San Jose State University, CA 2 Roma I, Universita, Italy 2 Oulu, University, Finland 2 New York, State University, Cortland 2 Nagoya City University, Japan 2 Milano, Universita, Milan 2 Messina, Universita, Messina 2 McMaster University, Hamilton 2 Leicester University, England 2 Kumamoto University, Japan 2 Hull, University, England 2 Guelph, University, Canada 2 Gorakhpur, University, India 2 Ferrara, Universita, Italy 2 Copenhagen University, Denmark 2 Beirut, American University, Lebanon 2 Athabasca University, Canada 2 Alcala de Henares, Universidad, Spain 1 Wuerzburg, Universitaet 1 Wroclaw, University, Poland 1 Wise University, Israel 1 Wilberforce University, OH 1 Western Ontario, University, Canada 1 Villanova, University, PA 1 Utah, State University, Logan 1 Uppsala, University, Sweden 1 Uppsala, Universitet, Sweden 1 Uppsala Universitet, Sweden 1 Tuebingen, Universitaet 1 Tuebingen, Universitae 1 Tsukuba, University, Japan 1 Trondheim, University, Norway 1 Triste, Universita, Italy 1 Tokyo, Science University, Japan 1 Tokyo Gakugei University, Koganei 1 Texas Tech University, Lubbock 1 Tel-Aviv University, Israel 1 Tel Aviv, University, Israel 1 Sussex, University, Falmer 1 Slippery Rock University, PA 1 Shiraz University, Iran 1 Shimonoseki City University, Japan 1 Santander, Universidad Spain 1 Roma II, Universita, Italy 1 Rennes I, Universite, France 1 Paris XI, Universite, Orsay 1 Paris VII, Universite, Fance 1 Osaka, Kyoiku University, Japan 1 Osaka Sangyo University, Japan 1 Opole, Pedagogical University, Poland 1 Ohio Wesleyan University, Delaware 1 Northern Iran, University, Iran 1 Northern Colorado, University, Greeley 1 Newcastle, University, Australia 1 New York, State University, Geneseo 1 New York, State University, Albany 1 New York, State University 1 New South Wales, University, Sydney 1 New Mexico State University 1 New Hampshire, University Durham, NH 1 Nebraska University, Lincoln 1 Montpelier II, Universite, France 1 Millersville University, PA 1 Massachussetts, University, Amherst 1 Massachusetts University 1 Manchester, University, England 1 Leicester, University, Eng 1 Lancaster, University, England 1 L'Aquilla, Universita, Italy 1 Kingston, Queen's University 1 Kiel, Neue Universitaet 1 Khartoum, University, Sudan 1 Hebrew Univ. of Jerusalem, Israel 1 Haifa, University, Israel 1 Grenoble I, Universite, Grenoble 1 Gorakhpur, University, Gorakhpur 1 Durham, University, Durham 1 Chicago, Loyola University, IL 1 Chambery, Universite, France 1 Brussels, Free University, Belgium 1 Besancon, Universite, France 1 Bangalore University, India 1 Attila Jozsef University, Szeged 1 Aarhus, Universitet, Aarhus 85 33 Pennsylvania State University, University Park, PA 150 Pennsylvania State University, University Park 59 Pennsylvania State University, University Park, PA 55 Pennsylvania, University, Philadelphia, Pa. 37 Pennsylvania State Univ., University Park 36 Pennsylvania, University, Philadelphia, PA 34 Pennsylvania State University, University Park, Pa. 28 Pennsylvania State Univ., University Park, PA, US 23 Alabama, University, University, AL 22 Pennsylvania State University, University Park, PA, US 7 Pennsylvania State University, University Park, Pennsylvania, US 7 Penn State University, University Park, PA, US 6 Pennsylvania State Univ., Univ. Park, PA, US 4 The Pennsylvania State University, University Park, PA, US 3 Sonoma State University, Rohnert Park, CA 3 Penn State Univ., University Park, PA, US 2 The Pennsylvania State Univ., University Park, PA, US 2 Pennsylvania State University, Dunmore, Pa. 2 Penn. State Univ., University Park, PA, US 1 Pennsylvannia State Univ., University Park, PA, US 1 Pennsylvania, University, University Park 1 Pennsylvania, University, Pittsburgh, Pa. 1 Pennsylvania, University, Phildelphia, Pa. 1 Pennsylvania State university, University Park 1 Pennsylvania State University, University, Park 1 Pennsylvania State University, University Part, PA 1 Pennsylvania State University, State College, PA, US 1 Pennsylvania State University, State College, PA 1 Pennsylvania State University, Philadelphia, Pa. 1 Pennsylvania State University, Fogelsville 1 Pennsylvania State University, College Park, PA 1 Pennsylvania State Univerity, Univerity Park, PA 1 Pennsylvania State Univ., Erie, PA, US 1 Pennsylavania State Univ., Fogelsville, PA, US 86 140 Louisiana State University, Baton Rouge 182 Ohio State University, Columbus 149 Arizona State University, Tempe 123 Wisconsin, University, Madison 119 New York, State University, Stony Brook 94 Louisiana State University, Baton Rouge 71 Alabama, University, Tuscaloosa 66 New York, State University, Stony Brook, N.Y. 62 New Mexico State University, Las Cruces 61 Georgia State University, Atlanta 53 Michigan State University, East Lansing 50 New York, State University, Stony Brook, NY 46 Arizona State University, Tempe, AZ 45 Louisiana State University, Baton Rouge, LA 41 Michigan State University, East Lansing, Mich. 39 Groningen, State University, Netherlands 38 Arizona State University, Tempe, AZ, US 37 Alabama, University, Huntsville 32 Arizona State Univ., Tempe 30 San Diego State University, CA 29 Louisiana State University, Baton Rouge, La. 24 Georgia State University, Atlanta, GA 22 Georgia State University, Atlanta, GA, US 21 Montana State University, Bozeman 21 Michigan State University, East Lansing, MI 19 Tennessee State University, Nashville 19 Niigata University, Japan 16 North Carolina State University, Raleigh 16 Arizona State University, Tempe, Ariz. 15 Boston University, Boston, Mass. 14 New Mexico State University, Las Cruces, NM 14 Lausanne, Universite, Lausanne 13 New York, State University, Albany, N.Y. 13 Missouri, University, Saint Louis 12 South Florida, University, Tampa, Fla. 12 Houston Baptist University, Houston, Tex. 12 Georgia State University, Atlanta, Ga. 11 San Francisco State University, CA 11 Louisiana State University Observatory, Baton Rouge, LA 11 Louisiana State Univ., Baton Rouge, LA, US 10 Washington State University, Pullman 10 San Diego State University, San Diego, CA 10 Missouri-Saint Louis, University, Saint Louis 10 Louisiana State University Observatory, Baton Rouge 9 San Diego State University, San Diego, Calif. 8 San Diego State University, San Diego, CA, US 8 Michigan State Univ., East Lansing 8 Louisiana State University, Baton Rouge, LA, US 8 Louisiana State Univ., Baton Rouge 8 Bowling Green State University, OH 7 Washington State University, Pullman, WA 7 Florida State University, Tallahassee 7 Florida Atlantic University, Boca Raton 7 Colgate University, Hamilton, N.Y. 6 Washington State University, Pullman, Wash. 6 South Carolina, University, Conway 6 South Carolina, University, Columbia 6 Montana State Univ., Bozeman 6 California State University, San Bernardino 6 Appalachian State University, Boone, NC 5 Utah State University, Logan 5 South Alabama, University, Mobile, AL 5 Oklahoma State University, Stillwater 5 Mankato State University, MN 5 Iowa State University, Ames, IA, US 5 Arizona State University, Tempe, Arizona, US 5 Alabama, University, Birmingham 4 Texas Christian University, Fort Worth 4 Odessa State University, Odessa, Ukraine 4 North Carolina State University, Raleigh, NC 4 Louisiana State University, Observatory, Baton Rouge, La. 4 Koyoto Sangyo University, Kyoto, Japan 4 Iowa State University, Ames 4 Groningen, State University 4 Georgia State Univesity, Atlanta, GA, US 4 Brigham Young University, Provo, Utah 3 Wichita State University, Wichita, KS 3 San Diego State University 3 Montana State University, Bozeman, MT 3 Missouri, University, St. Louis 3 Louisiana State University Observatory, Baton Rouge, La. 3 Hokkaido University, Sapporo 3 Arizona State Uiversity, Tempe, AZ, US 3 Appalachian State University, Boone, N.C. 2 Wichita State University, KS 2 Wayne State University, Detroit, MI 2 Seoul National University, Seoul, Korea 2 San Jose State University, San Jose, Calif. 2 Penn State University, PA, US 2 Northeastern University, Boston, MA 2 North Texas State University, Denton, Tex. 2 New York, State University, Oswego, N.Y. 2 Moscow State University, Russia 2 Moscow State University, Moscow, Russia 2 Montana State University, Bozeman, Montana, US 2 Louisiana State University, Observatory, Baton Rouge, LA 2 Johns Hopkins University, Baltimore 2 Iowa State University, Ames, Iowa, US 2 Florida State Univ., Tallahassee 2 Colorado State University, Ft. Collins, CO 2 Colgate University, Hamilton 2 California State University, Northridge 1 Wright State University, Dayton, OH 1 Trent University, Peterborough 1 The Ohio State University, OH, US 1 South Dakota State University, Brookings, SD, US 1 South Carolina, University, Lancaster 1 San Jose State University, San Jose, CA 1 Puerto Rico, University, San Juan 1 Pennsylvania State University, State College 1 Ohio State university, Columbus 1 Ohio State University, Manhattan 1 Ohio State University Columbus 1 Nottingham, University, England 1 New York, State University, Stoney Brook, NY 1 New York, State University, Brockport, N.Y. 1 New York, State University, Albany, NY 1 New Mexico State University, Las Cruses, NM 1 Morgan State University, Baltimore, Md. 1 Montana State University, Bozeman, Mont. 1 Montana State University, Bozeman, MT, US 1 Michigan State University, Lansing, Mich. 1 Michigan State University, Lansing 1 Louisiana State University, Observatory, Baton Rouge 1 Louisiana State Univ. Observatory, Baton Rouge 1 Louisana State University Observatory, Baton Rouge 1 Londrina State Univ., Brazil 1 Lausanne, Universite Lausanne 1 Kansas State University, Manhattan, Kan. 1 Jackson State University, Jackson, MS 1 Indiana State University, Terre Haute 1 Ibaraki, University, Mito, Japan 1 Georgia State University 1 Colorado State University, Fort Collins 1 Cleveland State University, OH 1 Chungman National University, South Korea 1 California State University, Los Angeles 1 Brigham Young University, Laie, HI 1 Austin State University, TX 1 Arizona State Universty, Tempe 1 Arizona State University, Tucson 87 78 Kitt Peak National Observatory, Tucson, AZ 898 Steward Observatory, Tucson, AZ 801 Kitt Peak National Observatory, Tucson, AZ 331 High Altitude Observatory, Boulder, CO 282 Kitt Peak National Observatory, Tucson, Ariz. 230 Steward Observatory, Tucson, Ariz. 92 National Solar Observatory, Tucson, AZ 90 National Optical Astronomy Observatories, Tucson, AZ 82 U.S. Naval Observatory, Flagstaff, AZ 59 Multiple Mirror Telescope Observatory, Tucson, AZ 30 Athens, National Observatory, Greece 29 Kitt Peak National Observatory, Tucson, AZ, US 16 Steward Observatory, Tucson 16 National Solar Observatory, Tucson, AZ, US 13 Kitt Peak National Observatory 12 Whipple Observatory, Tucson, AZ 11 U.S. Naval Observatory, Washington 8 Athens, National Observatory, Athens, Greece 6 Steward Observatory, Tucson, AZ, US 5 National Optical Astronomy Observatory, Tucson, AZ 5 Korea Astronomy Observatory, Daejon, Korea 5 Kitt Peak National Observatory, Tucson 4 Kitt Peak National Observatory, Tuscon, AZ 4 Fred L. Whipple Observatory, Amado, AZ 4 F. L. Whipple Observatory, Amado, AZ 3 Steward Observatory, Tuscon, AZ 3 National Optical Observatories, Tucson, AZ, US 3 Mount Hopkins Observatory, Amado, AZ 3 Korea Astronomy Observatory, Taejon, Korea 3 Fairborn Observatory, Mesa, AZ 3 F.L. Whipple Observatory, Amado, AZ 3 Dearborn Observatory, Evanston, IL 2 Steward Observatory, Tuscon, AZ, US 2 Ritter Observatory, Toledo 2 Pulkova Observatory, Russia 2 National Optical Astronomical Observatory, Tucson, AZ 2 Nat. Solar Observatory, Tucson, AZ, US 2 Mount Hopkins Observatory, Tucson, Ariz. 2 Kitt Peak Observatory, Tucson, AZ 2 Kitt Peak National Observatory, Tuscon, Ariz. 2 Fred L. Whipple Observatory, Tucson, AZ 2 Edinburgh, Royal Observatory, Scotland 2 Argonne National Laboratory, Argonne 1 U.S Naval Observatory, Flagstaff, AZ 1 Stewart Observatory, Tucson, Ariz. 1 Stewart Observatory, Tucson, AZ 1 Steward, Observatory, Tucson, Ariz. 1 Steward Observatory, Tucson, AC 1 Steward Observatory, Tempe, AZ 1 Steward Observatorty, Tucson, AZ 1 Scuppernong Observatory, Dousman, WI 1 Perkins Observatory, Columbus, OH 1 National Solar Observatories, Tucson, AZ 1 National Radio Observatory, Tucson, AZ, US 1 National Optical Observatories, Tucson, AZ 1 National Observatory, Greece 1 Mount Hopkins Observatory, Phoenix, AZ 1 Millimeter Wave Observatory, Austin, TX 1 Michigan-Dartmouth-MIT Observatory, Tucson, AZ 1 McGraw-Hill Observatory, Tucson, Ariz. 1 Lunar and Planetary Observatory, Tucson, AZ 1 Korea Astronomy Observatory, Taejeon, Korea 1 Korea Astronomy Observatory, Daejeon, Korea 1 Kitt Peak National Observatory,Tucson, AZ 1 Kitt Peak National Observatory, Tuson, AZ 1 Kitt Peak National Observatory, Tempe, AZ 1 Kitt Peak National Observatory , Tucson, AZ, US 1 Kitt Peak National Obervatory, Tucson, AZ 1 Kitt Peak National Laboratory, Tucson, Ariz. 1 Hight Altitude Observatory, Boulder, CO 1 High Altitude Observatory, Tucson, Ariz. 1 High Altitude Observatory, Boulder, Co 1 Greentree Observatory, Tempe, AZ 1 Fairborn Observatory, Tucson, AZ, US 1 F. L. Whipple Observatory, Tucson, AZ 1 Big Bear Solar Observatory, Pasadena 1 Athens, National Observatory 1 Athens National Observatory, Greece 1 Apache Point Observatory, AZ 88 41 Naval Research Laboratory, Washington, DC, US 105 U.S. Navy, Naval Research Laboratory, Washington, DC 94 Naval Research Laboratory, Washington, DC, US 87 Naval Research Lab., Washington, DC, US 69 U.S. Naval Observatory, Washington, DC 43 Physical Research Laboratory, Ahmedabad, India 41 U.S. Navy, Naval Research Laboratory, Washington, D.C. 39 U.S. Naval Observatory, Washington, DC, US 26 U.S. Naval Observatory, Washington, D.C. 9 Naval Research Laboratory, Washignton, DC, US 5 U.S. Naval Research Lab., Washington, DC, US 5 IBM Research Laboratory, San Jose, CA 5 Carnegie Inst. of Washington, Washington, DC, US 4 US Naval Research Laboratory, Washington, DC, US 3 Univ. Space Research Association, Washington, DC, US 3 National Air and Space Museum, Washington, DC, US 3 IBM Research Laboratory, San Jose, Calif. 2 US Naval Observatory, Washington, DC, US 2 US Naval Observatory, Washignton, DC, US 2 Smithsonian Institute, Washington, DC, US 2 SERC, Daresbury Laboratory, Warrington, England 2 NASA Headquaters, Washington, DC, US 1 United States Naval Observatory, Washington, DC, US 1 U.S. Navy, Navel Research Laboratory, Washington, DC 1 U.S. Navy, Naval Research Laboratory, Washington 1 U.S. Navy, Naval Resarch Laboratory, Washington, D.C. 1 U. S. Navy, Naval Research Laboratory, Washington, DC 1 U. S. Naval Observatory, Washington, DC 1 Space Research Laboratory, Groningen, Netherlands 1 SERC, Daresburg Laboratory, Warrington, England 1 Physical Research Laboratory, Navrangpura, India 1 Phillips Laboratory, Sunspot, NM, US 1 Naval Research Lab, Washington, DC, US 1 National Science Foundation, Washington, DC, US 1 National Research Council, Washington, D.C. 1 NASA. Headquarters, Washington, DC, US 1 NASA Headquarters, Washington, DC, US 1 General Research Corporation, Danvers, MA, US 1 GM Research Laboratories, Warren, MI 1 Forest Hills Laboratory, Washington, D.C. 1 Forest Hills Laboratories, Washington, DC 1 Daresbury Laboratory, Warrington, England, UK 89 22 Indian Institute of Astrophysics, Bangalore, India 129 Indian Institute of Astrophysics, Bangalore, India 34 Indian Inst. of Astrophysics, Bangalore, India 24 Indian Institute of Science, Bangalore, India 9 Indian Institute of Astrophysics, Bangalore 560034, India 8 Indian Isntitute of Astrophysics, Bangalore, India 6 Indian Inst. of Science, Bangalore, India 5 Saha Institute of Nuclear Physics, Calcutta, India 3 Indian Institute of Astrophysics, Koramangala, Bangalore 560034, India 3 Indian Institute of Astrophysics, Kodaikanal, India 2 Indian Institute of Geomagnetism, Bombay, India 2 Indian Institute of Astrophysics, Koramangala, Bangalore - 560034, India 2 Indian Institute of Astrophysics, Bangalore 560 034, India 2 Herzberg Institute of Astrophysics, Ottawa, Canada 1 Indian Institute of Technology, Bangalore, India 1 Indian Institute of Astrophysics, Koramangala, Bangalore, 560034, India 1 Indian Institute of Astrophysics, Bangladore, India 1 Indian Institute of Astrophysics 1 Indian Institute for Astrophysics, Bangalore, India 1 Indian Inst. of Astrophysics, Koramangala, Bangalore, India 1 Indian Inst. of Astrophysics, Bangalore 1 Herzberg Institute of Astrophysics, Ottawa 1 Hawaii Institute of Geophysics, Honolulu, Hawaii 90 65 California Institute of Technology, Pasadena, CA 609 California Institute of Technology, Pasadena 292 California Institute of Technology, Pasadena, Calif. 249 California Institute of Technology, Pasadena, CA 148 California Institute of Technology, Pasadena, CA, US 131 California Inst. of Technology, Pasadena 82 California Inst. of Technology, Pasadena, CA, US 64 California Inst. of Tech., Pasadena, CA, US 28 California Institute of Technology 15 Tokyo Institute of Technology, Tokyo, Japan 13 Florida Institute of Technology, Melbourne 8 New Jersey Institute of Technology, Newark 6 Tokyo Institute of Technology, Japan 6 Georgia Institute of Technology, Atlanta 6 Carnegie Institute of Washington, Pasadena, CA, US 6 California Institute of Technology, Pasadena, California, US 6 California Institute of Technology, Pasadena, CA 91125, USA 6 Calfornia Institute of Technology, Pasadena, CA, US 5 Lund Institute of Technology, Lund, Sweden 4 Israel Institute of Technology, Haifa, Israel 4 Calif. Inst. of Tech., Pasadena, CA, US 3 New Jersey Institute of Technology, Newark, NJ, US 3 Kanazawa Institute of Technology, Nonoichi, Japan 3 Georgia Inst. of Technology, Atlanta 3 California Isntitute of Technology, Pasadena, CA, US 3 Calif. Inst. of Technology, Pasadena, CA, US 2 Kanazawa Institute of Technology, Kanazawa, Japan 2 Kanazawa Institute of Technology, Japan 2 Kanazawa Institute of Technology, Ishikawa, Japan 2 Georgia Institute of Technology, Atlanta, Ga. 2 Florida Institute of Technology, Melbourne, FL, US 2 Florida Institute of Technology, Melbourne, FL 2 California, Institute of Technology, Pasadena, Calif. 2 California Institute of Technology, CA, US 2 California Institute of Technology, Big Pine, CA, US 2 California Inst. of Technology, Pasadena, CA 2 California Insititute of Technology, Pasadena, CA, US 2 Cal. Inst. of Tech., Pasadena, CA, US 1 Tokyo Institute of Techonology, Japan 1 Tokyo Institute of Technology, Atsugi, Japan 1 Stevens Institute of Technology, Hoboken, N.J. 1 SUNY Institute of Technology, Utica, NY, US 1 Rochester Institute of Technology, Rochester, NY 1 Rochester Institute of Technology, NY 1 New York Institute of Technology, Central Islip 1 NASA/IPAC, California Institute of Technology, Pasadena, CA, US 1 Lund Institute of Technology, Sweden 1 Kanazawa Institute of Technology, Nonaichi, Japan 1 Kanasawa Institute of Technology, Japan 1 JPL, California Inst. of Tech., Pasadena, CA, US 1 IPAC, California Institute of Techology, CA, US 1 IPAC, California Institute of Technology, JPL, Pasadena, CA 91125, USA 1 Chiba Institute of Technology, Narashino, Japan 1 Chiba Institute of Technology, Japan 1 California Institute of Technology, Pasadena, Ca, US 1 California Institute of Technology, Jet Propulsio 1 California Institute of California, Pasadena, CA, US 1 California Institute for Technology, Pasadena 1 California Institue of Technology, Pasadena, CA, US 1 California Inst.of Technology, Pasadena, CA, US 1 California Inst. of Technology 1 California Inst. of Tech, Pasadena, CA, US 1 California Insitute of Technology, Pasadena, CA, US 1 Califonia Inst. of Technology 1 Calf. Inst. of Tech., Pasadena, CA, US 1 Bandung Institute of Technology, Indonesia 91 22 Lockheed Research Laboratories, Palo Alto, CA 92 Lockheed Research Laboratories, Palo Alto, CA 33 Lockheed Research Laboratories, Palo Alto, Calif. 16 Lockheed Palo Alto Research Laboratory, Palo Alto, CA, US 14 Molecular Research Institute, Palo Alto, CA 5 Lockheed Research Labs., Palo Alto, CA 4 Lockheed Solar Observatory, Palo Alto, Calif. 4 Lockheed Research Laboratory, Palo Alto, CA 3 Molecular Research Inst., Palo Alto, CA 3 Lockheed Solar and Astrophysics Laboratory, Palo Alto, CA 3 Berkeley Research Associates, Berkeley, CA 2 Lockheed Space Sciences Laboratory, Palo Alto, CA 2 Lockheed Solar Observatory, Palo Alto, CA 2 Lockheed Palo Alto Research Laboratories, CA 2 Lockheed Missiles and Space Co., Palo Alto, CA 1 Molecular Research Institute, Palo Alto 1 Lockheed Solar and Astrophysics Lab., Palo Alto, CA 1 Lockheed Solar & Astrophysics Group, Palo Alto, CA 1 Lockheed Research Laboratory, Palo Alto, Calif. 1 Lockheed Research Laboratories, Palo, Alto, CA 1 Lockheed Palo Alto Research Laboratories, Palo Alto, CA, US 1 IBM Research Laboratories, San Jose, Calif. 1 Hewlett-Packard Laboratories, Palo Alto, CA 92 52 Applied Research Corp., Landover, MD 102 Applied Research Corp., Landover, MD 56 Computer Sciences Corp., Greenbelt, MD 30 Computer Sciences Corp., Baltimore, MD 24 Aerospace Corp., Los Angeles, CA 16 ST Systems Corp., Lanham, MD 16 Applied Research Corporation, Landover, MD, US 14 Hughes STX Corp., Lanham, MD 14 Computer Sciences Corp., Lanham, MD 14 Bartol Research Inst., Newark, DE 13 Hughes STX Corp., Greenbelt, MD 12 Mission Research Corp., Albuquerque, NM 10 ST Systems Corp., Greenbelt, MD 9 Applied Research Corp., Greenbelt, MD 8 Space Research Inst., Moscow, Russia 8 General Sciences Corp., Laurel, MD 7 Berkeley Research Associates, CA 6 Raman Research Inst., Bangalore, India 6 Ball Brothers Research Corp., Boulder, Colo. 6 Applied Research Corp., Landover, MD, US 5 Solar Physics Research Corp., Tucson, AZ 4 Applied Research, Inc., Huntsville, AL 3 Southwest Research Inst., San Antonio, TX 3 SM Systems and Research Corp., Landover, MD 3 IBM Corp., Research Div., San Jose, CA 3 Computer Sciences Corp., Seabrook, MD 3 Computer Science Corp., Greenbelt, MD 3 Aerospace Corp., Los Angeles 2 Perkin-Elmer Corp., Danbury, CT 2 Mission Research Corp., Santa Barbara, CA 2 Computer Sciences Corp., Beltsville, MD 2 Applied Research Corp., Greenbelt, MD, US 2 Applied Research Corp. 1 Western Research Co., Tucson, AZ 1 Sachs/Freeman Associates, Landover, MD 1 SM Systems and Research Corp., Lantham, MD 1 Perkin Elmer Corp., Garden Grove 1 Perkin Elmer Corp., Danbury, CT 1 Nichols Research Corp., Huntsville, AL 1 Morris Research, Inc., Berkeley, CA 1 Mission Research Corp., Nashua, NH 1 Mission Research Corp., ALbuquerque, NM 1 Martin Marietta Corp., Denver, CO 1 General Research Corp., Arlington, VA 1 Computer Sciences Corp., Lanham, MD, US 1 Computer Sciences Corp., Lanham 1 Applied Research and Systems, Landover, MD 1 Applied Research and Systems, Annapolis, Md. 1 Applied Research Corporation, Greenbelt, MD, US 1 Applied Research Corp., Lanham, MD 1 Applied Research Corp., Landove 1 Advanced Research Corp., Landover, MD 1 Advanced Research Corp., Atlanta, GA 93 17 Center for Astrophysics, Cambridge, MA, US 60 Center for Astrophysics, Cambridge, MA, US 32 Institute of Astronomy, Cambridge, UK 26 Inst. of Astronomy, Cambridge, UK 5 Harvard-Smithsonian, Cambridge, MA, US 4 Inst. for Astronomy, Cambridge, UK 4 Center for Space Research, Cambridge, MA, US 3 MIT Center for Space Research, Cambridge, MA, US 2 Inst. of Astronomy, Cambridge, England, UK 2 Center for Plasma-Astrophysics, Heverlee, Belgium 2 Center for Basement Astrophysics, Laurel, MD, US 2 Center for Basement Astrophysics, Laurel, MD 2 Center for Astrophysics, 60 Garden St, Cambridge, MA 21260, USA 1 Laboratory for Astrophysics, Torun, Poland 1 Inst. Of Astronomy, Cambridge, UK 1 Columbia Astrophysics Lab., NY, NY, US 1 Center for Plasma Astrophysics, Heverlee, Belgium 1 Center for Astrophysics, CCAST, Beijing, China 94 933 MIT, Cambridge, MA 563 MIT, Cambridge, MA 320 MIT, Cambridge, Mass. 271 Chicago, University, IL 230 Tokyo, University, Japan 228 JPL, Pasadena, CA 227 McDonald Observatory 196 Texas, University 169 Princeton University, NJ 167 Kyoto University, Japan 124 Arecibo Observatory, PR 115 SISSA, Trieste, Italy 105 Stanford University, CA 98 ESO, Garching, Germany 96 Nagoya University, Japan 85 Texas Univ., Austin 85 Paris, Observatoire, Meudon 65 Chicago Univ., IL 65 Boston University, MA 60 Montreal, Universite 58 Colorado, University 55 Illinois Univ., Urbana 54 Ohio State Univ., Columbus 53 Virginia, University 52 Steward Observatory 51 NORDITA, Copenhagen, Denmark 50 Villanova University, PA 50 Rochester, University 49 Toledo, University, OH 48 Universite Laval 47 Tokyo Univ., Japan 46 Lick Observatory 44 Pittsburgh, University, PA 44 New York University, NY 42 The Citadel, Charleston, SC 42 Stanford Univ., CA 42 MIT, Cambridge, MA, US 42 CNRS, Paris, France 41 Princeton Univ., NJ 38 Michigan Univ., Ann Arbor 35 Barcelona, Universidad 33 ESO, Santiago, Chile 32 Bologna, Universita 31 Tel Aviv University 31 Bologna Univ., Italy 30 David Dunlap Observatory 30 Computer Sciences Corp. 29 Nagoya Univ., Japan 29 Arizona Univ., Tucson 27 Kyoto Univ., Japan 27 Amsterdam, Universiteit 27 Amsterdam Univ. 24 Victoria Univ., Canada 24 Catania, Universita 24 Arizona, University 23 Ritter Observatory 23 Osservatorio Astronomico 23 Montreal Univ., Canada 23 Meudon, Observatoire 22 UNAM, Mexico 22 Swarthmore College, PA 22 Padua Univ., Italy 22 Milano, Universita 22 Boston Univ., MA 22 Bonn Univ., Germany 21 Padova, Universita 21 Osservatorio Astrofisico 21 Montreal Univ. 20 Palomar Observatory 20 Harvard University 19 Torun, Uniwersytet, Poland 19 Hampden-Sydney College, VA 19 Barcelona Univ., Spain 19 Amsterdam, University 18 Wise Observatory 18 Trieste, Universita 18 Toronto, University 18 NASA, Washington, DC 18 Middlebury College, VT 17 Univ. of Cambridge, Cambridge, UK 17 Univ. de Chile, Santiago 17 Lausanne, Universite 17 Grenoble, Observatoire 16 Haverford College, PA 16 DAEC, Meudon, France 16 Cornell University 15 SISSA 15 Paris, Observatoire 15 New Hampshire Univ., Durham 15 NASA, Washington, D.C. 15 Liege Univ., Belgium 15 JPL 15 CNRS, France 14 Moscow State Univ., Russia 14 MIT, Lexington, MA 14 MIT, Cambridge 14 Johns Hopkins Univ. 14 CNR, Frascati, Italy 13 UCLA, Los Angeles, CA, US 13 U.S. Naval Observatory 13 Roma I, Universita 13 Paris VII, Univ., France 13 High Altitude Observatory 13 Catania Univ., Italy 13 CNRS/UPS, Toulouse, France 12 Pittsburgh Univ., PA 12 Notre Dame, University, IN 12 Nice, Universite, France 12 NSF, Washington, DC 12 NCAR, Boulder, CO, US 12 Gifu University, Japan 12 Edinburgh, University 12 College de France, Paris 12 California Univ. 12 Calgary Univ., Canada 12 Barcelona Univ. 11 Toledo Univ., OH 11 San Diego State Univ., CA 11 Roma, Universita, Rome 11 Paris VII, Universite 11 Palermo, Universita 11 Oxford, University 11 JPL, Pasadena 11 ESO, La Silla, Chile 11 CSIRO, Epping, Australia 10 Oklahoma Univ., Norman 10 Chicago Univ. 10 CESR, Toulouse, France 9 Wellesley College, MA 9 Univ. Laval 9 NIST, Boulder, CO 9 Maine, University, Orono 9 MIT 9 Kiel Univ., Germany 9 Harvard Univ., Cambridge, MA, US 9 DASOP, Meudon, France 9 College de France 9 Chiba University, Japan 9 CSIC, Granada, Spain 9 Bonn, Universitaet 9 Athens Univ., Greece 8 Texas Univ. 8 SISSA/ISAS, Trieste, Italy 8 New York Univ., NY 8 NRAO, Charlottesville, VA, US 8 Hughes STX, Lanham, MD, US 8 DASGAL, Meudon, France 8 Claremont Colleges, CA 8 Chicago, University 8 CNRS, Marseille, France 8 CNRS 8 Aarhus Univ., Denmark 7 Wyoming Univ., Laramie 7 Wroclaw, Uniwersytet, Poland 7 Villanova Univ., PA 7 Torino, Universita 7 SRON 7 SFA, Inc., Landover, MD 7 Rochester Univ., NY 7 Pisa Univ., Italy 7 Pavia Univ., Italy 7 Oxford University 7 Lab. for Space Research 7 Kiso Observatory, Japan 7 IUE Observatory 7 Harvard Univ., Cambridge, MA 7 Columbia University 7 Catania Univ. 7 CNRS, Meudon, France 7 CNR, Bologna, Italy 7 Bologna Univ. 7 AT&T Bell Labs., Holmdel, NJ 6 Utrecht State Univ. 6 Torun Univ., Poland 6 Tokyo, University 6 Oslo Univ., Norway 6 NOAO, Tucson, AZ, US 6 Muenchen, Universitaet, Munich 6 Marseille, Observatoire 6 Lodz Univ., Poland 6 Kyoto Sangyo Univ., Japan 6 IZMIRAN, Troitsk, Russia 6 IRAM, Granada, Spain 6 IGN, Guadalajara, Spain 6 Hawaii, University, Hilo 6 Gettysburg College, PA 6 Florence Univ., Italy 6 ESA, Paris, France 6 Colby College, Waterville, ME 6 City College, New York 6 CSIC, Blanes, Spain 6 CONICET, Argentina 5 Univ. of Crete 5 Univ. Park, Hilo, HI, US 5 UNAM, Mexico, Mexico 5 Trieste Univ. 5 Syracuse University, NY 5 Shiraz, University 5 Raman Research Institute 5 Pisa Univ. 5 Palermo Univ. 5 Napoli, Univ. 5 NRAO, Socorro, NM, US 5 NOAO, La Serena, Chile 5 NCAR, Boulder, CO 5 NASA, Washington 5 Lodz, University, Poland 5 Leiden, Observatory 5 Kutztown University, PA 5 Iowa Univ., Iowa City 5 HAO/NCAR, Boulder, CO, US 5 Delhi Univ., India 5 DEMIRM, Paris, France 5 Columbia University, NY 5 Colorado Univ. 5 Ciudad Univ., Mexico 5 City College, New York, NY 5 Cantabria Univ. 5 CNRS, Nice, France 5 CNRS, Lyon, France 5 Bologna, Univ., Italy 5 Berlin, Technische Univ. 5 Beijing Observatory, China 5 Beijing Observatory 5 Arizona Univ. 4 Waterloo, University 4 Vanderbilt University 4 Univ. de Cantabria, Spain 4 UNAM, Mexico City, Mexico 4 UCSB, Santa Barbara, CA, US 4 Trieste Univ., Italy 4 Salonika Univ., Greece 4 SFA, Inc., Landover, MD, US 4 SETI Inst., Moffett Field, CA 4 Princeton University 4 Pisa, Universita 4 Phoenix Corp., McLean, VA 4 Palermo Univ., Italy 4 Oulu Univ., Finland 4 Notre Dame Univ., IN 4 Nordita, Copenhagen, Denmark 4 Nice, Universite 4 Nebraska Univ., Lincoln 4 Nanjing Univ., China 4 NRAO/AOC, Socorro, NM, US 4 NIST, Gaithersburg, MD 4 NIST, Boulder, CO, US 4 Muenchen, Univ., Munich 4 Meudon, Observatoire, Meudon 4 Lodz, Uniwersytet, Poland 4 Liege, Univ., Belgium 4 Leicester, University 4 Lecce Univ., Italy 4 Lecce Univ. 4 LANL, Los Alamos, NM, US 4 Kyoto, University, Japan 4 Kobe University, Japan 4 Kobe Univ., Kobe, Japan 4 IKI, Moscow, Russia 4 Georgia Univ., Athens 4 Ecole Normale Superieure 4 ENA, CA 91109 4 Dyer Observatory 4 DEMIRM, Meudon, France 4 DAPNIA, Yvette, France 4 CNRS-UPS, Toulouse, France 4 CNRS, Orleans, France 4 CNR, Milano, Italy 4 CNR 4 Brockport State College, NY 4 Bonn Univ. 4 Biruni Observatory, Iran 4 Bern Univ., Switzerland 4 Auburn University, AL 3 York University 3 Van Vleck Observatory 3 Universite Laval, Quebec 3 USAF, Phillips Lab. 3 UCSC, Santa Cruz, CA, US 3 U.N.A.M., Ensenada, Mexico 3 Toronto Univ. 3 The University, UK 3 Tel Aviv, University 3 Shiraz Univ. 3 Scarborough College 3 ST-ECF, Garching, Germany 3 SISSA, Trieste 3 Roma, Universita 3 Rochester Univ. 3 Rhodes College, Memphis, TN 3 Perkins Observatory 3 Pavia, Universita 3 Onsala Rymdobservatorium 3 ONERA, Chatillon, France 3 Nice, Observatoire, Nice 3 Nice Univ., France 3 Nebraska, University 3 NSF, Washington, DC, US 3 Mees Observatory, NY 3 Lund, University, Sweden 3 Lund Univ., Sweden 3 Liege, Universite, Liege 3 Lecce, Universita 3 Lawrence Berkeley Lab. 3 La Plata, Univ. Nacional 3 Krakow, Uniwersytet, Poland 3 Kobe Univ., Japan 3 Kiev State Univ., Ukraine 3 Kenyon College, Gambier, OH 3 Kagoshima Univ., Japan 3 IZMIRAN, Troitsk, USSR 3 IAS, Orsay, France 3 IAG-USP, Sao Paulo, Brazil 3 Hughes STX Corp. 3 Grinnell College, IA 3 Granada Univ., Spain 3 Gdansk, Uniwersytet, Poland 3 Ferrara Univ., Italy 3 ESA, Madrid, Spain 3 Denver, University, CO 3 DARC, Meudon, France 3 DAEC, Meudon Cedex, France 3 Citrus College, Azusa, CA 3 Cincinnati Univ., OH 3 Chamberlin Observatory 3 Cassino Univ., Italy 3 CNRS/URA, Nice, France 3 CNRS, URA, Nice, France 3 CNRS, Orelans, France 3 CNRS URA, Nice, France 3 CNR, Padua, Italy 3 CNR, Italy 3 CEA, Gif-sur-Yvette, France 3 Biruni Observatory 3 Besancon, Observatoire 3 Basel Univ., Switzerland 3 ARPEGES, Meudon, France 2 Yamagata Univ., Japan 2 Wyoming Univ. 2 Warszawa, Uniwersytet 2 Virginia Univ. 2 Vigo Univ., Spain 2 Vienna Univ., Austria 2 Victoria, University 2 VUB, Brussels, Belgium 2 Utsunomiya Univ., Japan 2 Utrecht Univ. 2 Unvi. Paris, France 2 University of Crete 2 University College 2 UniversiteLaval 2 Univ. of Nigeria, Nsukka 2 Univ. of Leeds, Leeds, UK 2 Univ. di Pisa, Italy 2 Univ. Wien, Wien, Austria 2 Univ. Observatory 2 USAF, Phillips Laboratory 2 UNAM, Ensenada, Mexico 2 UMIST, Manchester, UK 2 UFRN, Natal, Brazil 2 UCL, London, UK 2 Turin Univ., Italy 2 Trenton State College, NJ 2 Titan Systems, San Diego, CA 2 Titan Systems, Inc. 2 Texas University, Austin 2 Texas University 2 Technion, Haifa, Israel 2 Tartu Univ., Estonia 2 TRW, Inc., Redondo Beach, CA 2 Stuttgart Univ., Germany 2 Shanghai Observatory, China 2 San Fernando Observatory 2 STScI 2 SRON, Netherlands 2 SISSA, Italy 2 Royal Observatory 2 Roma, Univ. 2 Roma II, Universita 2 Roma II, Univ., Rome 2 Roma I, Univ. 2 Rochester University 2 Research Centre of Crete 2 Regis College, Weston, MA 2 Regina Univ., Canada 2 Real Inst. 2 Queen Mary College 2 Pune, University, India 2 Porto Univ., Portugal 2 Perugia, Universita 2 Paris VII, Univ. 2 Paris VI, Universite 2 Paris VI, Univ., France 2 Paris VI, Univ. 2 OCIW, Pasadena, CA, US 2 Niigata Univ., Japan 2 Nice, Observatoire 2 Naval Research Lab., US 2 Napoli, Universita 2 Nanyang University 2 Nanjing University 2 Nagoya University 2 NSF, Washington, D.C. 2 NRC, Victoria, BC, Canada 2 NRC, Ottawa, Canada 2 NRAO, Tucson, AZ, US 2 NORDITA 2 NIKHEF, Netherlands 2 NCRA, Pune, India 2 NCAR 2 NBS, Boulder, CO 2 Mycol, Inc., Sunnyvale, CA 2 Mount Laguna Observatory, CA 2 Mount Laguna Observatory 2 Mons, Universite, Belgium 2 Milan Univ., Italy 2 Mees Observatory 2 Meerut College, India 2 Massachusetts Univ. 2 Mainz Univ., Germany 2 MPIfR, Bonn, Germany 2 MIT, Westford, MA, US 2 MIT, Socorro, NM 2 Lethbridge Univ., Canada 2 Leicester Univ. 2 Leeds Univ. 2 L'Aquila Univ., Italy 2 Kyoto Univ., Uji 2 Kandilli Observatory 2 J.I. Holcomb Observatory 2 J. I. Holcomb Observatory 2 Ithaca College, NY 2 Ist. di Astronomia 2 Inst. d'Estudis Catalans 2 Innsbruck Univ., Austria 2 Ilinois Univ., Urbana 2 IUCAA, Pune, India 2 ISAS/SISSA, Trieste, Italy 2 IRA, Bologna, Italy 2 IPIC, Lima, Peru 2 IPAC, Pasadena, CA, US 2 INAOE, Mexico 2 IKI, Moscou, Russia 2 IFCAI/CNR, Palermo, Italy 2 Hawaii, University, Manoa 2 Hawaii Univ., Hilo 2 Hale Observatories 2 Groningen State Univ. 2 Grinnell College, Grinnell, IA 2 Graz Univ., Austria 2 Goteborg Univ., Sweden 2 GEOS, Versailles, France 2 Erindale College 2 EXOSAT Observatory 2 ESA-VILSPA, Madrid, Spain 2 ENEA-TECRI, Frascati, Italy 2 Delaware Univ., Newark 2 Comtech, Lanham, Md. 2 CfA 2 Catania, Univ. 2 Cambridge, England 2 Cambridge University 2 CRNS-UPS, Toulouse, France 2 CONICET, La Plata, Argentina 2 CNRS/URA, Meudon, France 2 CNRS-URQA, Lyon, France 2 CNRS, Toulouse, France 2 CNR, Rome, Italy 2 CNR, CAISMI, Florence, Italy 2 CFHT, Kamuela, HI, US 2 CERFACS 2 CEA, France 2 CASA, Boulder, CO, US 2 C.E.K. Mees Observatory, NY 2 Bologna, Univ. 2 Bochum, Sternwarte 2 Bochum, Ruhr-Univ. 2 Biruni Observatory, Shiraz 2 Beijing Univ., China 2 Barnard College, New York 2 Bari Univ. 2 BDM International, Inc. 2 BDM Corp., McLean, Va. 2 Athens, University 2 Ankara Univ., Turkey 2 Amherst College, MA 2 Albion College, MI 1 York University, Canada 1 York Univ., Toronto 1 York Univ., Canada 1 Wyoming, University 1 Wuerzburg, Univ., Germany 1 Wooster, College, OH 1 Wisconsin Univ. 1 Wichita State Univ., KS 1 Whitin Observatory 1 Wellesley College 1 Washington, University 1 Washburn Observatory 1 Waseda University 1 Villanova, University 1 Villanova University 1 Vatican Observatory 1 Vanderbilt Univ. 1 Valparaiso Univ., IN 1 Valladolid Univ., Spain 1 Valencia Univ., Spain 1 Universitats-Sternwarte 1 Universitaets-Sternwarte 1 Universidad de Puer 1 Univ.-Sternwarte, Munich 1 Univ. of Virginia, VA, US 1 Univ. of Hawaii, HI, US 1 Univ. of Crete, Greece 1 Univ. de Chile 1 Univ. Graz, Graz, Austria 1 Univ. Bonn, Germany 1 Umea Universitet, Sweden 1 USRA, Huntsville, AL, US 1 USRA, Greenbelt, MD, US 1 USAF, Space Div. 1 USAF, Hanscom AFB, MA 1 URA CNRS, Meudon, France 1 UPIICSA, Mexico D.F., Mexico 1 UNAM, Mexico D.F., Mexico 1 U.F.C., Fortaleza, Brazil 1 Tromso, Universitetet 1 Toyama Univ., Japan 1 Tours, Universite, France 1 Toledo, University, Ohio 1 Tokyo, University Japan 1 Tokyo Univ., Mitaka 1 Tokyo Univ. 1 Tohoku Univ., Sendai 1 Texas, University,, Austin 1 Texas, Univerity 1 TRIUMF, Vancouver, Canada 1 TEL AVIV UNIVERSITY 1 Szeged Univ. 1 Sydney, University 1 Sydney Univ. 1 Stockholm Univ., Sweden 1 Steward Observatory, AZ 1 Sternwarte Babelsberg 1 StarStuff, Inc., Seattle 1 Stanford University 1 Stanford Universi 1 St. John's College 1 Spicer Memorial College, India 1 Sofia Univ., Bulgaria 1 SofTech, Waltham, MA 1 Sissa, Trieste, Italy 1 Shizuoka Univ., Japan 1 Shiraz University 1 Sevilla, Univ., Spain 1 Scuola Normale Superiore 1 Scranton, University, PA 1 Sao Paolo Univ., Brazil 1 Santiago Univ., Spain 1 Santa Fe Inst., NM 1 Salerno Univ., Italy 1 Salamanca Univ., Spain 1 SUNY, Stony Brook, NY, US 1 STX, Inc., Greenbelt, MD 1 STX Corp., New York 1 STX Corp., Lanham, MD 1 STScI, Baltimore, MD, US 1 ST-ECF, Muenchen, Germany 1 SSC Laboratory, Dallas, TX 1 SOFRADIR, Veurey-Voroize 1 SLAC, Stanford, CA, US 1 SISSA-ISAS, Trieste, Italy 1 SFA Inc., Landover, MD, US 1 SETI Inst., Mountain View, CA 1 SENER, Madrid, Spain 1 SAR, Riverdale, MD 1 SAR, Inc., Lanham, MD 1 S.A.A.O., South Africa 1 Rome, Italy 1 Roma Univ. 1 Roma II, Univ. 1 Roma I, Universita, Rome 1 Richmond Hill, Ontario 1 Rennes I, Univ., France 1 Raytheon Co., Lexington, MA 1 Ratheon Co., Lexington 1 Radcliffe College 1 RMIT, Victoria, Australia 1 RIKEN, Wako, Japan 1 RIKEN, Saitama, Japan 1 RHUS, DK-8000 1 RHUS C, DENMARK 1 Queen Mary, College, MA 1 Pune, University 1 Princeton, NJ, US 1 Priceton University, NJ 1 Potsdam Univ., Germany 1 Poona University, India 1 Pisa, Universita, Pisa 1 Pic-du-Midi, Observatoire 1 Phoenix Corp., McLean, Va. 1 Phoenix Corp., McLean 1 Phillips Laboratory ( 1 Phillips Lab., MA, US 1 Philadelphia, PA 1 People's Republic of China 1 Paris, Observatoire, Meudo 1 Paris VII, Univ., Meudon 1 Pangaro, Inc., Washington, DC 1 Pangaro Inc., Washington, DC 1 Palermo Univ 1 Pahlavi University 1 Padua Univ. 1 Padova, Univ., Padua 1 Oxford Univ. 1 Oviedo Univ., Spain 1 Osservatorio di Brera 1 Oita University, Japan 1 Ohio State University 1 Observatorio Felix Aguilar 1 Observatori 1 Oberlin College, OH 1 OBSERVATOIRE DE LA MONT 1 Nordita 1 Nice, Universite, Nice 1 Nice, Univ., France 1 Nice Observatoire 1 New York University 1 New Orleans Univ., LA 1 Netherlands 1 Nanjing Univ. 1 NSF, Washington 1 NSF 1 NRC, Victoria, Canada 1 NRAO-AOC, Socorro, NM, US 1 NRAO, Socorro, NM 1 NRAO, Green Bank, WV, US 1 NRAO, Boulder, CO, US 1 NRAL, Chesire, UK 1 NRAL, Cheshire, UK 1 NOAA, Boulder, CO, US 1 NIST, Boulder 1 NIST 1 NEC Corp., Kawasaki, Japan 1 NBS, Gaithersburg, MD 1 NASA/GSFC, Greenbelt, MD, US 1 NASA-IRTF, Honolulu, HI, US 1 NASA-GSFC, Greenbelt, MD, US 1 NASA, Madrid, Spain 1 NASA 1 NAO, Kamogata, Japan 1 Muenster, Univ., Germany 1 Muenster Univ. 1 Muenchen, Universitaet 1 Mt. Wilson Observatory 1 Montrel, Universite 1 Montreal, Univ. 1 Minor Planet Center, Cambridge, MA 1 Minnesota Univ., Morris 1 Minnesota Univ. 1 Miles College 1 Milano Univ. 1 Milan, Universita 1 Meudon, Ob 1 Meudon Observatoire 1 Messina, Universita 1 Mcdonald Observatory 1 McMaster Univ., Hamilton 1 Max-Planck-Institut fuer R 1 Maryland, University 1 Marburg Univ., Germany 1 Mankato State Univ., MN 1 Manchester, Victoria Univ. 1 Manchester Polytechnic 1 Macon College, GA 1 MSSO, Weston, Australi 1 MPE, Garching, Germany 1 MIT, Cambridge, NJ 1 MIT Cambridge, Mass. 1 MC), Hanscom AFB, MA, US 1 MAX-PLANCK-INSTITUT FUR R 1 MAX-PLANCK-INSTITUT FUR 1 M.I.T., Westford, MA, US 1 M. I. T., Cambridge, MA, US 1 Lyon, Observatoire, France 1 Lyon I, Universite 1 Lynchburg College, VA 1 Lund University, Sweden 1 Lund Univ. 1 Lund Observatory 1 Lowell Observatory 1 Los Alamos National Lab. 1 Lorand Eotvos Univ. 1 Lockheed Corp. 1 Lille I, Universite 1 Lille I, Univ., France 1 Liege, Universite 1 Liege Univ. 1 Leiden Univ. 1 Leiden State Univ. 1 Leiden Observatory 1 Leicester Univ., UK 1 Leeds, University 1 Leeds University, Leeds 1 Lecce, Universita, Lecce 1 Lawrence Berkeley Lab., CA 1 Laval, Universite 1 Laval Univ. 1 Laramie High School, WY 1 La Plata Univ., Argentina 1 La Plata Univ. 1 La Laguna Univ., Spain 1 LURE, Orsay, France 1 LEDA, France 1 LASP 1 LAEFF, Madrid, Spain 1 Kyoto University Japan 1 Kyoto Gakuen Univ., Japan 1 Kumamoto Univ., Japan 1 Kent, University, England 1 Keele Univ. 1 Joint Astronomy Centre, 1 Johns Hopkins Univ., MD 1 Jodrell Bank, Cheshire, UK 1 Jesus College 1 Jena, Univ. 1 Jena Univ., Germany 1 Ithaca College, Ithaca, NY 1 Italy 1 Ist. Universitario Navale 1 Ioannina Univ., Greece 1 Institute for Advance 1 Institut za Fiziku 1 Institut d 1 Inst. of Physics 1 Inst. for Advanced Study 1 Inst. de Astronomia, Mexico 1 Indiana Univ., IN, US 1 Indian Inst. of Science 1 IZMIRAN, Moscow, USSR 1 IUE-VILSPA, Madrid, Spain 1 ISON, WI 53706 1 ISON, M 1 ISO Observatory 1 ISAS, Kanagawa, Japan 1 IROE-CNR, Firenze, Italy 1 IRAM, France 1 IOTC, Inc., Laramie, WY 1 IOTA, Hannover, Germany 1 INST. OF PHYSICS, UNIV. OF 1 INST. OF ASTRONOMY, M 1 INST. FOR 1 INPE, Sao Jose dos Campos 1 INFN, Perugia, Italy 1 IFCTR-CNR, Milano, Italy 1 IBM Venezuela 1 IBM Espana, Madrid, Spain 1 IBM Corp., Milwaukee, WI 1 IBM Corp., Kingston, NY 1 IAP, Paris, France 1 I.R.A.M., Granada, Spain 1 I.E.C., Barcelona, Spain 1 Huntsville Univ., AL 1 Hughes/STX Corp., Lanham 1 Hughes/STX Corp. 1 Hughes STX, Lanham, MD 1 Hughes STX, Inc. 1 Hughes STX 1 Hughes Aircraft Co. 1 Houston, University 1 Hollins College, Roanoke, VA 1 Hiroshima University 1 Hirosaki Univ., Japan 1 Haystack Observatory 1 Hauts-de-Seine 1 Harvard-Smithsonian Cen 1 Hanover Univ., Germany 1 Grenoble I, Universite 1 Grenoble I Univ., France 1 Graz, Univ., Austria 1 Granada, Universidad 1 Goteborg, University 1 Global Enterprises, Inc. 1 Gifu Univ., Japan 1 Gifu Univ., Gifu, Japan 1 Giessen, Universitaet 1 Genova, Universita 1 Genoa Univ., Italy 1 Geneve, Universite, Geneva 1 Geneve, Observatoire 1 General Atomics, San Diego, CA 1 Gdansk Univ., Poland 1 GNA/CNR, Firenze, Italy 1 Fukui University, Japan 1 Frascati 1 Firenze, Universita 1 Fick Observatory, Ames, IA 1 Fernbank Science Center 1 Felix Aguilar Observatory 1 FNRS, Liege, Belgium 1 F 1 Emmanuel College, Cambridge CB2 3AP 1 Emmanuel College, Boston 1 Edinboro University, PA 1 ESO, Muenchen, Germany 1 ESO 1 ESCA Corp., Bellevue, WA 1 ESA/IUE, Madrid, Spain 1 ESA/ESRIN, Frascati, Italy 1 ESA, Space Science Dept. 1 ESA, IUE, Madrid, Spain 1 ESA, Frascati, Italy 1 ESA, Apartado, Madrid, Spain 1 ERDA, Ames, Iowa 1 ENEA, Bologna, Italy 1 ENA, CA 91103 1 Durham, University 1 Duke Univerity, Durham, NC 1 Dearborn Observatory 1 David Dunlop Observatory 1 DRMIRM, Paris, France 1 DLR, Cologne, Germany 1 DESPA, Meudon, France 1 DESPA, France 1 DBA Corp., Melbourne, FL 1 DASGAL, Paris, France 1 DARA, Bonn, Germany 1 DAO, Victoria, BC, Canada 1 DANOF/URA, Paris, France 1 DAEC, Meudon, Paris 1 Cornell Univ. 1 Comtech, Greenbelt, MD 1 Computer Dynamics, Inc. 1 Compton Observatory 1 Columbia Univ. 1 Colorado University 1 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College, Amherst, MA 1 Alma College, MI 1 Alcalade Henares 1 Alabama, University 1 Alabama Univ. 1 Admirals Walk, England, UK 1 Abril Univ., Iraq 1 AURA, Inc., Washington, DC 1 AURA, Inc. 1 ANRAO, Parkes, Australia 1 AIP, Woodbury, NY 1 AAVSO, Cambridge, MA 1 2166 NE CL 1 , Canada 95 20 Bell Telephone Laboratories, Inc., Holmdel, NJ 66 AT&T Bell Laboratories, Holmdel, NJ 44 Bell Telephone Laboratories, Inc., Holmdel, NJ 43 AT&T Bell Laboratories, Murray Hill, NJ 36 Bell Telephone Laboratories, Inc., Murray Hill, N.J. 32 Bell Telephone Laboratories, Inc., Holmdel, N.J. 20 Bell Telephone Laboratories, Inc., Murray Hill, NJ 7 AT&T Bell Laboratories, Holmdel 4 Bell Telephone Laboratories, Inc., Holmdel 3 Bell Telephone Laboratories, Inc., Murray Hill 2 Bell Telephone Laboratories, Murray Hill, NJ 2 Bell Telephone Laboratories, Holmdel, NJ 1 Telephone Laboratories, Inc., Holmdel, NJ 1 Bell Telephone Laboratories, Whippany, NJ 1 Bell Telephone Laboratories, Inc., Crawford Hill, N.J. 1 Bell Telephone Laboratories, Holmdel, N.J. 1 AT&T Bell Telephone Laboratories, Whippany, NJ 1 AT&T Bell Telephone Laboratories, Inc., Murray Hill 1 AT&T Bell Telephone Laboratories, Inc., Holmdel, NJ 1 AT & T Bell Laboratories, Murray Hill, NJ 1 AT & T Bell Laboratories, Holmdel, NJ 96 19 Institute for Advanced Study, Princeton, NJ 298 Institute for Advanced Study, Princeton, NJ 91 Institute for Advanced Study, Princeton, N.J. 59 Inst. for Advanced Study, Princeton, NJ 54 Institute for Advanced Study, Princeton, NJ, US 34 Inst. for Advanced Study, Princeton, NJ, US 10 Institute of Advanced Study, Princeton, NJ, US 7 Dublin Institute for Advanced Studies, Ireland 5 Institute of Advanced Study, Princeton, NJ 5 Institute for Advanced Study, Princeton, New Jersey, US 5 Institute for Advanced Study 2 Institute for Advanced Study, NJ 2 Institute for Advanced Studies, Princeton, NJ, US 1 Institute of Advanced Study, Princeton, N.J. 1 Institute for Advanced study, Princeton, NJ 1 Institute for Advanced Study, Princeton, NJ 08540, USA 1 Institute for Advanced Study, Madison, WI, US 1 Institute for Advanced Study Princeton, NJ 1 Inst. for Advanced Studies, Princeton, NJ 1 Insitute for Advanced Study, Princeton, New Jersey, US 97 101 Queen Mary College, London, England 450 University College, London, England 302 Queen Mary College, London, England 75 Lancashire Polytechnic, Preston, England 36 Hatfield Polytechnic, England 31 University College, Dublin, Ireland 25 Univ. College, London, United Kingdom 16 Queen Mary and Westfield College, London, UK 15 Lafayette College, Easton, PA 13 Preston Polytechnic, Preston, England 12 Univ. College London, London, UK 9 University College London, London, UK 9 Bentley College, Waltham, MA 8 Wheaton College, Norton, MA 7 University College, Galway, Ireland 7 Middlebury College, Middlebury, Vt. 6 Haverford College, Haverford, Pa. 6 Harvey Mudd College, Claremont, CA 5 Weber State College, Ogden, UT 5 Trenton State College, Trenton, N.J. 5 Queen Mary College, London 5 Keble College, Oxford, England 5 Emmanuel College, Boston, MA 4 University College, London 4 University Coll., London, UK 4 Univ. College London, Surrey, UK 4 St. John's College, Cambridge, England 4 Queen Elizabeth College, London, England 4 Harvey Mudd College, Claremont, Calif. 4 Goldsmiths' College, London, England 3 University College London, London, England, UK 3 Univ. College, Dublin, Ireland 3 Univ. College London, Holmbury, UK 3 Saint Mary's College, Moraga, CA 3 Queen Mary College, London, UK 3 Middlebury College, Middlebury, VT 3 Lafayette College, Easton, PA, US 3 Kutztown State College, Kutztown, Pa. 3 Imperial College, London, UK 3 Connecticut College, New London, CT, US 3 Centre College, Danville, KY 2 Westfield College, London, England 2 University College, London, United Kingdom 2 University College, Cork, Ireland 2 University College of London, London, UK 2 University College London, Holmbury, UK 2 Saint Patrick's College, Maynooth, Ireland 2 Rider College, Lawrenceville, NJ 2 Racal Avionics, Ltd., London, England 2 Queen Mary & Westfield College, London, England, UK 2 Preston Polytechnic, England 2 Presidency College, Calcutta, India 2 Liverpool Polytechnic, England 2 Imperial College, London, England, UK 2 Goldsmiths' College, London, United Kingdom 1 Yunnan National College, Kunming, China 1 Weber State College, Ogden, Utah 1 University, College, London, England 1 University College, Oxford, England 1 University College London, England 1 Univ. of College London, London, UK 1 Univ. College, London, England 1 Univ. College London, London, England, UK 1 Tsuda College, Kodaira, Japan 1 Trenton State College, Trenton, NJ 1 Trenton State College, Trengton, NJ 1 Thames Polytechnic, London, England 1 St. Patrick's College, Maynooth, Ireland 1 St. Patrick's College, Manooth, Ireland 1 St. Mary's Coll., Moraga, CA, US 1 St. John's College, Annapolis 1 St. Hilda's College, Oxford, England 1 Spelman College, Atlanta, GA 1 South Parks Road, Oxford, England 1 South London College, London, England 1 Siena College, Loudonville, NY 1 Sheffield City Polytechnic, England 1 San Juan College, Farmington, NM 1 Rider College, Lawrenceburg, NJ 1 Queen Mary and Westfield College 1 Oberlin College, Oberlin, Ohio 1 Manhattan College, Bronx, NY 1 Manhattan College, Bronx, N.Y. 1 Magdalen College, Oxford, England 1 London Polytechnic, London, England 1 London College, London, England 1 Logica, Ltd., London, England 1 Lambuth College, Jackson, TN 1 King's College, London, England 1 King's College, Cambridge, England 1 Hunter College, New York, N.Y. 1 Houston Baptist College, Houston, Tex. 1 Hope College, Holland, MI, US 1 Harvey Mudd College, Claremont 1 Fanshawe College, London, Canada 1 Dulwich College, London, England 1 Connecticut College, New London, Conn. 1 Chemical Centre, Lund, Sweden 1 Brighton Polytechnic, England 1 Benedictine College, Atchison, Kan. 1 Barnard College, New York, NY 1 American College, Madurai, India 98 299 Univ. of Toronto, Toronto, Canada 245 Toronto, University, Canada 229 Univ. of California, Berkeley, CA, US 147 Univ. of Arizona, Tucson, AZ, US 138 Univ. of Texas, Austin, TX, US 86 Univ. of Colorado, Boulder, CO, US 85 Toronto, University, Toronto, Canada 68 Univ. of Hawaii, Honolulu, HI, US 65 Univ. of Wisconsin, Madison, WI, US 64 University of Colorado, Boulder, CO, US 60 York University, Toronto, Canada 57 Univ. of Tokyo, Tokyo, Japan 55 McMaster University, Hamilton, Canada 54 Univ. of Michigan, Ann Arbor, MI, US 46 Univ. of Washington, Seattle, WA, US 46 Univ. of Chicago, Chicago, IL, US 44 Alberta, University, Edmonton, Canada 43 York University, North York, Canada 43 Univ. of Toronto, Toronto, Ontario, Canada 42 Toronto Univ., Canada 40 University of Tokyo, Tokyo, Japan 40 Univ. of Illinois, Urbana, IL, US 35 Universite Laval, Quebec, Canada 35 Univ. di Padova, Padova, Italy 32 Univ. de Montreal, Montreal, Quebec, Canada 29 Univ. of California, Los Angeles, CA, US 27 Osaka University, Toyonaka, Japan 26 Univ. of California, San Diego, CA, US 25 Univ. of Delaware, Newark, DE, US 25 Univ. of Alabama, Tuscaloosa, AL, US 22 University of Toronto, Toronto, Ontario, Canada 21 Univ. of Oklahoma, Norman, OK, US 19 Univ. of Rochester, Rochester, NY, US 17 Univ. of Kentucky, Lexington, KY, US 15 York Univ., North York, Canada 14 University of Bristol, Bristol, UK 14 Univ. of Kansas, Lawrence, KS, US 14 Univ. of Iowa, Iowa City, IA, US 14 Univ. of Calif., Berkeley, CA, US 13 Univ. of Helsinki, Helsinki, Finland 12 Univ. of Victoria, Victoria, BC, Canada 12 Univ. of Sydney, Sydney, Australia 11 Univ. of Western Ontario, London, Ontario, Canada 11 Univ. of Toledo, Toledo, OH, US 11 Univ. of Tokyo, Mitaka, Tokyo, Japan 11 Univ. of Tokyo, Bunkyo, Tokyo, Japan 11 Univ. of Lund, Lund, Sweden 11 Univ. of Calgary, Calgary, Alberta, Canada 10 Univ. of Toronto, Toronto, Canada 10 Univ. of Tokyo, Tanashi, Tokyo, Japan 10 Univ. of Leicester, Leicester, UK 10 Univ. of California, Riverside, CA, US 10 Univ. of Bern, Bern, Switzerland 10 Univ. di Lecce, Lecce, Italy 10 Univ. de Valencia, Valencia, Spain 10 Univ. de Montreal, Montreal, Canada 9 York Univ., North York, Ontario, Canada 9 University of Toledo, Toledo, OH, US 9 Univ. of Waikato, Hamilton, New Zealand 9 Univ. of Padova, Padova, Italy 9 Univ. of California, La Jolla, CA, US 9 Univ. di Firenze, Firenze, Italy 9 Univ. de Nice, Nice, France 8 Univ. of Toronto, Ontario, Canada 8 Univ. of Hong Kong, Hong Kong 8 Univ. of Georgia, Athens, GA, US 8 Univ. of Durham, Durham, UK 8 Univ. de Barcelona, Barcelona, Spain 7 Univ. of Oxford, Oxford, UK 7 Univ. of Crete, Heraklion, Greece 7 Univ. di Roma, Roma, Italy 7 Univ. di Pisa, Pisa, Italy 7 Keio University, Yokohama, Japan 6 University of Turku, Piikkio, Finland 6 University of Tokyo, Nagano, Japan 6 University of London, London, UK 6 Univ. of Turku, Piikkio, Finland 6 Univ. of Oslo, Oslo, Norway 6 Univ. of Oregon, Eugene, OR, US 6 Univ. of Calgary, Calgary, Canada 6 Univ. of Arizona, Tucson, Arizona, US 6 Univ. de Los Andes, Merida, Venezuela 6 Univ. Laval, Quebec, Canada 6 Univ. La Sapienza, Roma, Italy 6 Montreal Univ., Montreal, Canada 5 York Univ., Toronto, Canada 5 Univ. pr., Moscow, Russia 5 Univ. of Wyoming, Laramie, WY, US 5 Univ. of Toronto, Toronto, ON, Canada 5 Univ. of Toronto, Mississauga, Ontario, Canada 5 Univ. of Tokyo, Meguro-ku, Tokyo, Japan 5 Univ. of Southampton, Southampton, UK 5 Univ. of Montreal, Montreal, Quebec, Canada 5 Univ. of British Columbia, BC, Canada 5 Univ. of Birmingham, Birmingham, UK 5 Univ. di Bologna, Bologna, Italy 5 The Univ. of Tokyo, Tokyo, Japan 5 Scarborough College, Toronto, Canada 4 Victoria Univ., Victoria, Canada 4 Univ. of Trondheim, Dragvoll, Norway 4 Univ. of Milano, Milano, Italy 4 Univ. of London, London, UK 4 Univ. of Leece, Leece, Italy 4 Univ. of Gdansk, Gdansk, Poland 4 Univ. of Crete, Crete, Greece 4 Univ. of California, Livermore, CA, US 4 Univ. of Calif., Santa Cruz, CA, US 4 Univ. of British Columbia, UK 4 Univ. de Montreal, Quebec, Canada 4 Univ. Laval, Sainte-Foy, Quebec, Canada 4 Univ. La Sapienza, Rome, Italy 4 The University of Tokyo, Tokyo, Japan 4 Saint Mary's Univ., Halifax, Canada 4 King's College, Edmonton, Canada 4 CITA, Toronto, Ontario, Canada 3 University of Toronto, Toronto, Canada 3 Univ. zu Koeln, Koeln, Germany 3 Univ. of Western Ontario, Ontario, Canada 3 Univ. of Tuebingen, Tuebingen, Germany 3 Univ. of Tokyo, Meguro, Tokyo, Japan 3 Univ. of Tasmania, Hobart, Australia 3 Univ. of Sydney, NSW, Australia 3 Univ. of Pisa, Pisa, Italy 3 Univ. of Notre Dame, Notre Dame, IN, US 3 Univ. of Nebraska, Lincoln, NE, US 3 Univ. of Kiel, Kiel, Germany 3 Univ. of Kent, Kent, UK 3 Univ. of Genova, Genova, Italy 3 Univ. of Coloradio, Boulder, CO, US 3 Univ. of Colorada, Boulder, CO, US 3 Univ. of Calif., Irvine, CA, US 3 Univ. of Belfast, Belfast, UK 3 Univ. of Athens, Athens, Greece 3 Univ. Paris XI, Orsay, France 3 Univ of Pisa, Pisa, Italy 3 Toronto Univ., Toronto, Canada 3 NRC of Canada, Victoria, BC, Canada 3 Erindale College, Toronto, Canada 2 York Univ., Toronto, Ontario, Canada 2 University of Vermont, Burlington, VT, US 2 University of Tokyo, Tokyo, Tokyo 2 University of Firenze, Firenze, Italy 2 Univ.of London, London, UK 2 Univ. of Wisconson, La Crosse, WI, US 2 Univ. of Wisconsin, La Crosse, WI, US 2 Univ. of Wiconsin, Madison, WI, US 2 Univ. of Western Ontario, London, Canada 2 Univ. of Waterloo, Waterloo, Ontario, Canada 2 Univ. of Victoria, Victoria, Canada 2 Univ. of Trodheim, Dragvoll, Norway 2 Univ. of Torino, Torino, Italy 2 Univ. of Tasmania, Tasmania, Australia 2 Univ. of Sussex, Brighton, UK 2 Univ. of Rome I, Rome, Italy 2 Univ. of Patras, Patras, Greece 2 Univ. of Paris XI, Orsay, France 2 Univ. of Palermo, Palermo, Italy 2 Univ. of Padua, Padua, Italy 2 Univ. of Padua, Padova, Italy 2 Univ. of Padova, Asiago, Italy 2 Univ. of Oulu, Oulu, Finland 2 Univ. of Nigeria, Nsukka, Nigeria 2 Univ. of New York, Stony Brook, NY, US 2 Univ. of Moscow, Moscow, Russia 2 Univ. of Maine, Orono, ME, US 2 Univ. of Kentucy, Lexington, KY, US 2 Univ. of Illinios, Urbana, IL, US 2 Univ. of Hong Kong, Hong Kong, China 2 Univ. of Hawaii, Hilo, HI, US 2 Univ. of Glasgow, Glasgow, Scotland 2 Univ. of Florida, Gainsville, FL, US 2 Univ. of Denver, Denver, CO, US 2 Univ. of Chicago, Chicago, Il, US 2 Univ. of Calilfornia, Berkeley, CA, US 2 Univ. of California, Irvine, CA, US 2 Univ. of Bonn, Bonn, Germany 2 Univ. of Bonn, Bonn, German 2 Univ. of Arizona, Tempe, AZ, US 2 Univ. di Napoli, Napoli, Italy 2 Univ. di Milano, Milano, Italy 2 Univ. di Genova, Genova, Italy 2 Univ. de Zaragoza, Zaragoza, Spain 2 Univ. de Valencia, Burjassot, Spain 2 Univ. de Sao Paulo, Sao Paulo, Brasil 2 Univ. de Paris Sud, Orsay, France 2 Univ. de Montreal, Montreal, QC, Canada 2 Univ. de Madrid, Madrid, Spain 2 Univ. de Lisboa, Lisbon, Portugal 2 Univ. Wien, Weien, Austria 2 Univ. Tubingen, Tubingen, Germany 2 Univ. Paul Sabatier, Toulouse, France 2 Univ. J. Fourier, Grenoble, France 2 Univ. Gent, Gent, Belgium 2 Univ. Bordeaux, Floirac, France 2 Univ. Bochum, Bochum, Germany 2 Univ. Autonoma, Madrid, Spain 2 Univ. 'La Sapienza', Roma, Italy 2 Univ of Athens, Zografos, Greece 2 Univ of Arizona, Tucson, AZ, US 2 Toronto University, Toronto, Canada 2 McGill University, Montreal, Canada 2 MacLennan Labs, Toronto, Ontario, Canada 2 Iwate University, Morioka, Japan 1 York University, Concord, Canada 1 York Univ., Ontario, Canada 1 Unvi. Jagiellonski, Krakow, Poland 1 University of Victoria, Victoria, Canada 1 University of Tromso, Tromso, Norway 1 University of Toronto, Ontario, Canada 1 University of Florence, Firenze, Italy 1 University of Calgary, Calgary, Canada 1 University of Alberta, Edmonton, Canada 1 UniversiteLaval, Quebec, Canada 1 Universite Laval, Quebec,Canada 1 Univeristy of Colorado, Boulder, CO, US 1 Univ.of Hawaii, Honolulu, HI, US 1 Univ. ofWashington, Seattle, WA, US 1 Univ. of Western Ontario London, Ontario, Canada 1 Univ. of Washington, WA, US 1 Univ. of Washington, Settle, WA, US 1 Univ. of Victoria, Victoria, BC, US 1 Univ. of Victoria, Victoria, BC, UK 1 Univ. of Turku, Pikkio, Finland 1 Univ. of Tuebingen, Germany 1 Univ. of Toronto, Toronto, Ontario, CA 1 Univ. of Toronto, Richmond Hill, Ontario, Canada 1 Univ. of Tokyo, Nagano, Japan 1 Univ. of Tokyo, Bunko, Tokyo, Japan 1 Univ. of St Andrews, Fife, Scotland 1 Univ. of South Africa, Pretoria 1 Univ. of Sao Paulo, Sao Paulo, Brazil 1 Univ. of San Diego, La Jolla, CA, US 1 Univ. of Puerto Rico, Rio Piedras 1 Univ. of Puerto Rico, Humacao 1 Univ. of Portsmouth, Portsmouth, UK 1 Univ. of Peking, Beijing, China 1 Univ. of Oxford, Oxford, England, UK 1 Univ. of New York, Courtland, NY, US 1 Univ. of Nevada, Las Vegas, NV, US 1 Univ. of Missouri, Columbia, MO, US 1 Univ. of Minnesota, Morris, MN, US 1 Univ. of Minnesota, MN, US 1 Univ. of Milan, Milan, Italy 1 Univ. of Lodz, Lodz, Poland 1 Univ. of Kansas, Lawrence, Kansas, US 1 Univ. of Iowa, Iowa, IA, US 1 Univ. of Iceland, Reyjavik, Iceland 1 Univ. of Helsinki, Finland 1 Univ. of Hawaii, Honolulu, HA, US 1 Univ. of Haifa, TIVON, Israel 1 Univ. of Haifa, Haifa, Israel 1 Univ. of Glasgow, Glasgow, UK 1 Univ. of Florence, Firenze, Italy 1 Univ. of Ferrara, Ferrara, Italy 1 Univ. of Durham, England, UK 1 Univ. of Durham, Durham, England, UK 1 Univ. of California, Sant Cruz, CA, US 1 Univ. of California, Los Angles, CA, US 1 Univ. of California, Davis, CA, US 1 Univ. of California, Berkely, CA, US 1 Univ. of CalifornIA, Berkeley, CA, US 1 Univ. of Calgary, Calgary, AB, Canada 1 Univ. of Calgary, Alberta, Canada 1 Univ. of Bologna, Bologna, Italy 1 Univ. of Birmingham, Birmingham, AL, US 1 Univ. of Arizon, Tucson, AZ, US 1 Univ. of Adelaide, S.A., Australia 1 Univ. of Aarhus, Aarhus, Denmark 1 Univ. di Torino, Torino, Italy 1 Univ. di Roma Tor Vergata, Roma, Italy 1 Univ. di Pavia, Pavia, Italy 1 Univ. di Ferrara, Ferrara, Italy 1 Univ. di Catania, Catania, Italy 1 Univ. degli Studi, Milano, Italy 1 Univ. degli Studi, Catania, Italy 1 Univ. degli Studi, Bologna, Italy 1 Univ. de Sao Paulo, Paulo, Brazil 1 Univ. de Puerto Rico, Humacao 1 Univ. de Montreal, Montreal, BC, Canada 1 Univ. de Moncton, Moncton, Canada 1 Univ. Station, Laramie, WY, US 1 Univ. Paris, Paris, France 1 Univ. Paris, Meudon, France 1 Univ. Paris 7, Meudon, France 1 Univ. Laval,Quebec, Canada 1 Univ. Laval, Quebec, Quebec, Canada 1 Univ. Koeln, Koeln, Germany 1 Univ. Jagiellonski, Krakow, Poland 1 Univ. Coll. London, London, UK 1 Univ di Milano, Milano, Italy 1 Univ de Barcelona, Barcelona, Spain 1 Toronto Univ., Ontario, Canada 1 Shiba High School, Tokyo, Japan 1 NRC, British Columbia, Canada 1 Memorial Univ., Corner Brook, Canada 1 Inst. of Astronomy, Moscow, Russia 1 Hosei University, Koganei, Japan 1 Hosei Univ., Koganei, Tokyo, Japan 1 Erindale, College, Toronto, Canada 1 Canadian Marconi Co., Montreal, Canada 99 365 Clemson Univ., Clemson, SC, US 122 University of Arizona, Tucson, AZ, US 105 Johns Hopkins Univ., Baltimore, MD, US 78 Hawaii Univ., Honolulu 77 Maryland Univ., College Park 73 Ohio State Univ., Columbus, OH, US 72 Princeton Univ., Princeton, NJ, US 68 Princeton Univ. Observatory, NJ 63 Cornell Univ., Ithaca, NY, US 59 Oxford Univ., United Kingdom 59 Johns Hopkins Univ., Baltimore, MD 59 Colorado Univ., Boulder 55 Cornell Univ., Ithaca, NY 54 Arizona State Univ., Tempe, AZ, US 51 Virginia Univ., Charlottesville 48 Wisconsin Univ., Madison 43 Washington Univ., Seattle 40 Columbia Univ., New York, NY, US 38 Stanford Univ., Stanford, CA, US 38 Roma I, Univ., Rome, Italy 37 Yale Univ., New Haven, CT, US 37 Padova, Univ., Padua, Italy 36 Columbia Univ., New York 35 Minnesota Univ., Minneapolis 34 Northwestern Univ., Evanston, IL, US 27 Sydney Univ., Australia 26 Durham Univ., United Kingdom 26 Boston Univ., Boston, MA, US 24 Northwestern Univ., Evanston, IL 24 Alabama Univ., Tuscaloosa 23 Yale Univ., New Haven, CT 22 Tuebingen Univ., Germany 22 Helsinki Univ., Observatory, Finland 21 McMaster Univ., Hamilton, Canada 20 Rice Univ., Houston, TX, US 20 Clemson Univ., Clemson, SC, US 19 Clemson University, SC 18 Tel Aviv Univ., Tel Aviv, Israel 18 Firenze, Univ., Florence, Italy 17 Vanderbilt Univ., Nashville, TN, US 17 Valencia Univ., Burjasot, Spain 17 Nagoya Univ., Nagoya, Japan 16 Wien, Univ., Vienna, Austria 16 Tohoku Univ., Sendai, Japan 16 Kyoto Univ., Kyoto, Japan 16 Florida Univ., Gainesville 16 Boston University, Boston, MA, US 15 Clemson Univ., SC 14 Wuerzburg Univ., Germany 14 Texas Univ., Austin, TX, US 14 Nevada Univ., Las Vegas 13 Rutgers Univ., Piscataway, NJ, US 13 Rice Univ., Houston, TX 13 Paris XI, Univ., Orsay, France 13 Indiana University, Bloomington, IN, US 13 Hokkaido Univ., Sapporo, Japan 13 George Mason Univ., Fairfax, VA, US 12 Villanova University, Villanova, PA, US 12 Kansas Univ., Lawrence 12 Hawaii Univ., Honolulu, HI, US 12 Georgia State Univ., Atlanta, GA, US 12 Alabama Univ., Huntsville 11 Waterloo Univ., Canada 11 Torino, Univ., Turin, Italy 11 Oregon Univ., Eugene 11 Muenster Univ., Germany 11 Kentucky Univ., Lexington 11 Indiana Univ., Bloomington, IN, US 11 Indiana Univ., Bloomington 11 Colorado Univ., Boulder, CO, US 10 Roma II, Univ., Rome, Italy 10 Muenchen, Univ., Munich, Germany 10 Kyoto Univ., Uji, Japan 10 Kyoto Univ., Sakyo, Kyoto, Japan 10 Brandeis Univ., Waltham, MA, US 9 Wisconsin Univ., Madison, WI, US 9 Washington Univ., Saint Louis, MO 9 Villanova Univ., Villanova, PA, US 9 Glasgow Univ., United Kingdom 9 Brigham Young Univ., Provo, UT, US 8 Vanderbilt Univ., Nashville, TN 8 Tokyo Univ., Mitaka, Japan 8 Rice University, Houston, TX, US 8 Osaka Univ., Osaka, Japan 8 Minnesota Univ., Minneapolis, MN, US 8 Maryland Univ., College Park, MD, US 8 Keele Univ., United Kingdom 8 Hiroshima Univ., Hiroshima, Japan 7 Sophia Univ., Tokyo, Japan 7 New Hampshire Univ., Durham, NH, US 7 Montana State Univ., Bozeman, MT, US 7 Citta Univ., Catania, Italy 6 Wesleyan University, Middletown, CT, US 6 Wesleyan Univ., Middletown, CT, US 6 Warsaw Univ. Observatory, Poland 6 Valencia Univ., Burjassot, Spain 6 Tromso, Universitetet, Norway 6 Tokyo Univ., Tokyo, Japan 6 Rutgers Univ., Piscataway, NJ 6 Padova Univ., Padua, Italy 6 Osaka Univ., Toyonaka, Japan 6 Negev Univ., Beersheba, Israel 6 Missouri Univ., Saint Louis 6 Milano, Univ., Milan, Italy 6 Michigan Univ., Ann Arbor, MI, US 6 Drexel Univ., Philadelphia, PA, US 6 Arkansas Univ., Fayetteville 5 Yamanashi Univ., Takeda, Japan 5 Washington Univ., St. Louis, MO, US 5 Washington Univ., Seattle, WA, US 5 Sussex Univ., Falmer, UK 5 Rhodes College, Memphis, TN, US 5 Oxford Univ., Oxford, UK 5 Oslo Univ., Blindern, Norway 5 Monash Univ., Clayton, Australia 5 Jadavpur Univ., Calcutta, India 5 Iowa State Univ., Ames, IA, US 5 Helsinki Univ., Finland 5 Florida Univ., Gainesville, FL, US 5 Clemson University, Clemson, SC 5 Aarhus Univ., Aarhus, Denmark 4 Wichita State Univ., Wichita, KS, US 4 Washington Univ., Saint Louis, MO, US 4 Warsaw Univ., Warsaw, Poland 4 Virginia Univ., Charlottesville, VA, US 4 Univ. of Mass., Amherst, MA, US 4 Tufts University, Medford, MA, US 4 Torino Univ., Turin, Italy 4 The Johns Hopkins Univ., Baltimore, MD, US 4 The Citadel, Charleston, SC, US 4 Rikkyo Univ., Tokyo, Japan 4 Phillips Lab., Aberdeen, MD, US 4 Notre Dame Univ., Notre Dame, IN, US 4 Northern Arizona Univ., Flagstaff, AZ, US 4 Lodz Univ., Lodz, Poland 4 Kyushu Univ., Fukuoka, Japan 4 Hughes STX Corp., Lanham, MD, US 4 Hohai Univ., Nanjing, China 4 Georgia Univ., Athens, GA, US 4 Durham Univ., Durham, UK 4 Clemson University, Clemson, S.C. 4 Cataluna, Univ. Politecnica 4 Birmingham Univ., Birmingham, UK 4 Arkansas Univ., Little Rock 3 Zagreb Univ., Zagreb, Croatia 3 Wesleyan Univ., Middletown, CT 3 U.W.-Madison, Madison, WI, US 3 Thessaloniki Univ., Thessaloniki, Greece 3 Stanford Univ., Sandford, CA, US 3 St. Andrews Univ., Scotland, UK 3 Rutherford Lab., Chilton, UK 3 Osaka Univ., Osdaka, Japan 3 Odessa State Univ., Odessa, Ukraine 3 Nanjing Univ., Nanjing, China 3 Moscow Univ., Moscow, Russia 3 Millikin Univ., Illinois, IL, US 3 Leicester Univ., Leicester, UK 3 Leeds Univ., United Kingdom 3 Kokugakuin Univ., Tokyo, Japan 3 Hughes STX, Greenbelt, MD, US 3 Genova, Univ., Genoa, Italy 3 Drake Univ., Des Moines, IA, US 3 Colgate Univ., Hamilton, NY, US 3 Clemson University, Clemson, South Carolina, US 3 Catholic Univ., Washington, DC, US 3 California Univ., Irvine, CA, US 3 Brown Univ., Providence, RI, US 3 Bologna Univ., Bologna, Italy 3 Arizona Univ., Tucson, AZ, US 3 Academia Sinica, Beijing, China 2 Williams College, Williamstown, MA, US 2 Wellesley Coll., Wellesley, MA, US 2 Vikram Univ., Ujjain, India 2 Vermont Univ., Burlington 2 Vanderbuilt Univ., Nashville, TN, US 2 Valparaiso Univ., Valparaiso, IN, US 2 Trondheim Univ., Dragvoll, Norway 2 Toyama Univ., Toyama, Japan 2 Tokyo Univ., Komaba, Japan 2 Seikei Univ., Tokyo, Japan 2 Queen's Univ., Belfast, UK 2 Queen's Univ., Belfast, Ireland 2 Pisa Univ., Pisa, Italy 2 Penn St. Univ., Univ. Park, PA, US 2 Peking Univ., Beijing, China 2 Paris VII, Univ., Meudon, France 2 Padua Univ., Padova, Italy 2 Oslo Univ., Oslo, Norway 2 Oslo Univ., Blindern, Oslo, Norway 2 Ochanomizu Univ., Tokyo, Japan 2 New York Univ., New York, NY, US 2 Napoli, Univ., Naples, Italy 2 Nagoya Univ., Toyokawa, Japan 2 Millikin Univ., Decatur, IL 2 Milano Univ., Milan, Italy 2 Kutztown University, Kutztown, PA, US 2 King College, Bristol, TN, US 2 Kiev Univ., Kiev, Ukraine 2 JATE Univ., Szeged, Hungary 2 Iowa Univ., Iowa City, IA, US 2 Inonu Univ., Malatya, Turkey 2 Indiana Univ., South Bend, IN, US 2 Illinois Univ., Urbana, IL, US 2 Helsinki Univ., Observatory 2 Helsinki Univ. Observatory 2 Haifa Univ., Tivon, Israel 2 Glasgow Univ., Glasgow, UK 2 George Mason Univ., Fairfax, VA 2 Fukushima Univ., Fukushima, Japan 2 Drexel Univ., Philadelphia, PA 2 Dickenson College, Carlisle, PA, US 2 Copenhagen Univ., Copenhagen, Denmark 2 Columbia Univ., New York City, NY, US 2 Clark Atlanta Univ., Atlanta, GA, US 2 Citta Univ., Cantania, Italy 2 Chongju Univ., Republic of Korea 2 Chicago Univ., Chicago, IL, US 2 Catania Univ., Catania, Italy 2 Carnegie Mellon Univ., Pittsburgh, PA, US 2 California Univ., Santa Cruz, CA, US 2 Bristol Univ., United Kingdom 2 Brigham Young Univ., Provo, UT 2 Brandon Univ., Canada 2 Brandeis Univ., Waltham, MA 2 Beckman Inst., Urbana, IL, US 2 Ball State Univ., Muncie, IN, US 2 Auckland Univ., New Zealand 2 Athens Univ., Athens, Greece 2 Arizona State Univ., Temple, AZ, US 2 Arizona State Univ., Phoenix, AZ, US 2 Alma College, Alma, MI, US 2 Alma Coll., Alma, MI, US 2 Alberta Univ., Edmonton, Canada 2 Alabama Univ., Huntsville, AL, US 2 Adelaide Univ., Australia 1 Wroclaw Univ., Observatory, Poland 1 Wollongong Univ., Australia 1 Wittenberg Univ., Springfield, OH, US 1 Wisconsin Univ., Milwaukee 1 Wisconsin Univ., La Crosse 1 Wien Univ., Vienna, Austria 1 Widener Univ., Chester, PA, US 1 Weedin Place, Seattle, WA, US 1 Washington State Univ., Pullman, WA, US 1 Washington St. Univ., Pullman, WA, US 1 Waseda Univ., Tokyo, Japan 1 Vassar Coll., Poughkeepsie, NY, US 1 Vanderbilt Univ., Nahville, TN, US 1 Valencia, Univ., Burjasot, Spain 1 Valencia, Univ. Burjasot, Spain 1 Utkal Univ., Bhubaneswar 1 Utah Univ., Salt Lake City 1 University of Iowa, IA, US 1 URA 173 CNRS, Meudon, France 1 Tufts Univ., Medford, MA, US 1 Tufts Univ., Medford, MA 1 Tromso, Universitetet, Tromso 1 Toronto Univ., Mississanga, Canada 1 Toledo Univ., Toledo, OH, US 1 Tokai Univ., Kanagawa, Japan 1 Toho Univ., Chiba, Japan 1 Texas Univ., San Antonio 1 Tel-Aviv Univ., Tel-Aviv, Israel 1 Tel-Aviv Univ., Tel Aviv, Israel 1 Tartu Univ., Tartu, Estonia 1 Synernet, Fremont, CA, US 1 Stockholm Univ., Stockholm, Sweden 1 Steward Univ., Tucson, AZ, US 1 Standord Univ., Stanford, CA, US 1 San Jose State Univ., San Jose, CA, US 1 SSC Laboratory, Dallas, TX, US 1 SLAC, Stanford, California, US 1 Rhodes College, Parkway, TN, US 1 Radiometrics, Inc., Henderson, NV, US 1 Radiometrics Inc., Henderson, NV, US 1 Pusan Univ., Republic of Korea 1 Pusan Univ., Pusan, Korea 1 Princeton Univ., Observatory, NJ 1 Pomona College, Claremont, CA 1 Pennsylvania Univ., Philadelphia, PA, US 1 Paris X, Univ., Ville-d'Avray 1 Paris VI, Univ., Orsay, France 1 Oregon, Universiy, Eugene 1 Oranim Univ., Tivon, Israel 1 Northwestern Univ., Evanston, Il, US 1 Northeastern Univ., Boston, MA 1 NorthWestNet, Bellevue, WA, US 1 North Carolina Univ., Chapel Hill, NC, US 1 Niigata Univ., Niigata, Japan 1 Nihon Univ., Narashino, Japan 1 Munich Univ., Munchen, Germany 1 Muenchen Univ., Munich, Germany 1 Mons, Univ. de l'Etat, Belgium 1 Millikin Univ., Decatur, IL, US 1 Milan Univ., Milan, Italy 1 Messina Univ., Messina, Italy 1 Melbourne Univ., Australia 1 McGill Univ., Montreal, Canada 1 Mankato State Univ., Mankato, MN, US 1 Manchester Univ., MacClesfield, UK 1 Maine Univ., Orono, ME, US 1 Loras College, Dubuque, IA, US 1 Lomonosov Univ., Moscow, Russia 1 Lisbon Univ., Portugal 1 Lehigh Univ., Bethlehem, PA, US 1 Kyushu Univ., Fukuopka, Japan 1 Kumaun Univ., Nainital, India 1 Kokugakuin Univ., Higashi, Japapn 1 Kobe Univ., Hyogo, Japan 1 Kinki Univ., Osaka, Japan 1 King Sejong Univ., Seoul, Korea 1 Keio Univ., Hiyoshi, Japan 1 Keele Univ., Keele, UK 1 Kagoshima Univ., Kagoshima, Japan 1 Jackson State Univ., Jackson, MS, US 1 Iwate Univ., Morioka, Japan 1 Intel Corporation, Beaverton, OR, US 1 Illinois Univ., Chicago 1 Illinois Univ., Champaign 1 Ibaraki Univ., Bunkyo, Mito, Japan 1 Hunan Normal Univ., Changsha, China 1 Hong Kong Univ., Hong Kong 1 Hofstra Univ., Hempstead 1 Hanscom Air Force Base, MA, US 1 Haifa Univ., Haifa, Israel 1 Genoa Univ., Genoa, Italy 1 Gemini Project, Tucson, AZ, US 1 Florence Univ., Florence, Italy 1 Ferdowski Univ., Mashad, Iran 1 Ferdowsi Univ., Mashhad, Iran 1 Drew Univ., Madison, NJ 1 Drake Univ., Des Moines, IA 1 Delhi Univ., Delhi, India 1 Crete Univ., Heraklion, Greece 1 Crete Univ., Crete, Greece 1 Columbia Uiv., New York 1 Cologne Univ., Germany 1 College of Charleston, Charleston, SC, US 1 Colgate Univ., Hamilton, NY 1 Cleveland State Univ., Cleveland, OH, US 1 Claremont College, Claremont 1 Cincinnati Univ., Cincinnati, OH, US 1 Ciadad Univ., Mexico City, Mexico 1 Chicago Univ., Urbana, IL, US 1 Charles Univ., Czech Republic 1 Castellon Univ., Spain 1 Case Western Univ., Cleveland, OH, US 1 Calgary Univ., Calgary, Canada 1 Calgary Univ, Calgary, Canada 1 Cairo Univ., Giza, Egypt 1 CTA Incorp., Rockville, MD, US 1 Butler Univ., Indianapolis, IN, US 1 Brandon Univ., Brandon, Canada 1 Brandeis Univ., Boston, MA, US 1 Boston, Univ., Boston, MA, US 1 Boston College, Newton, MA, US 1 Bogazici Univ., Istanbul, Turkey 1 Bilkent Univ., Ankara, Turkey 1 Bendix Corp., Denver, Colo. 1 Ben-Gurion Univ., Beersheva, Israel 1 Beloit College, Beloit, WI, US 1 Arizona Univ., Tempe, AZ, US 1 Appalachian State Univ., Boone, NC, US 1 Alabama Univ., Tuscaloosa, AL, US 1 Aarhus Univ., Arhus C, Denmark 1 AT&T Bell Lab., Holmdel, NJ, US 100 18 Los Alamos National Laboratory, Los Alamos, NM 235 Los Alamos National Laboratory, NM 125 Los Alamos National Laboratory, Los Alamos, NM 31 Los Alamos National Lab., NM 22 Los Alamos National Laboratory, Los Alamos, NM, US 19 Brookhaven National Laboratory, Upton, NY 15 Los Alamos National Lab., Los Alamos, NM, US 9 Oak Ridge National Laboratory, TN 4 Brookhaven National Laboratory, Upton 3 Sandia National Laboratory, Albuquerque, NM 3 Oak Ridge National Laboratory, Oak Ridge, TN 2 Los Alamos National Laboratory, Los Alamos, New Mexico, US 1 Los Alamos Scientific Laboratory, Los Alamos, NM 1 Los Alamos National Laboratory 1 Los Alamos National Laboratories, Los Alamos, NM, US 1 Kitt Peak National Laboratory, Tucson, AZ 1 Brookhaven, National Laboratory, Upton, NY 1 Brookhaven National Laboratory, Upton, N.Y. 1 Brookhaven National Laboratory, Upton, N. Y. 101 10 SERC, Rutherford Appleton Laboratory, Didcot, England 51 SERC, Rutherford Appleton Laboratory, Didcot, England 31 Rutherford Appleton Laboratory, Didcot, England 5 Rutherford Appleton Laboratory, Didcot 4 Rutherford Appleton Laboratory, Chilton, Didcot, UK 2 Rutherford Appleton Laboratory, Oxon, UK 2 Rutherford Appleton Laboratory, Didcot, United Kingdom 1 SERC, Rutherford-Appleton Laboratory, Didcot, England 1 SERC, Rutherford Appleton Laboratory, Didcot 1 Rutherford Appleton Laboratory, Chilton, UK 1 Rutherford Appleton Laboratory, Chilton, England 102 7 ESA, Villafranca Satellite Tracking Station, Madrid, Spain 51 ESA, Villafranca Satellite Tracking Station, Madrid, Spain 5 ESA, Satellite Tracking Station, Madrid, Spain 2 ESA, Villafranca del Castillo Satellite Tracking Station, Madrid, Spain 1 Villafranca Satellite Tracking Station, Madrid, Spain 1 ESA, Villafranco Satellite Tracking Station, Madrid, Spain 1 ESA, Villafranca, Satellite Tracking Station, Madrid, Spain 1 ESA Villafranca Satellite Tracking Station, Madrid, Spain 103 146 Cambridge University, Cambridge, England 635 Cambridge University, Cambridge, England 288 Cambridge University, England 226 Oxford University, Oxford, England 163 Cambridge University Institute of Astronomy, England 155 Cambridge, University, England 148 Oxford, University, England 115 Durham, University, Durham, England 95 Oxford University, England 75 Helsinki, University, Observatory, Finland 69 Florida, University, Gainesville, Fla. 62 Harvard University, Cambridge, MA 55 Cambridge University, Observatories, Cambridge, England 51 Kent, University, Canterbury, England 51 Indiana University, Bloomington, Ind. 48 Birmingham, University, Birmingham, England 38 Glasgow, University, Glasgow, Scotland 33 Harvard University, Cambridge, Mass. 29 Cardiff, University College, Wales 24 Cambridge University, Observatories, England 21 Paris VI, Universite, Paris, France 20 Sheffield, University, Sheffield, England 19 Southampton, University, Southampton, England 19 Howard University, Washington, DC 18 Leeds University, Leeds, England 18 Cambridge, University, Observatories, England 15 Waikato, University, Hamilton, New Zealand 15 Turku, University, Finland 15 Sheffield, University, England 13 Leeds, University, England 12 Vanderbilt University, Nashville, TN, US 12 Alabama, University, Huntsville, Ala. 10 Osmania University, Hyderabad, India 9 Harvard University, Cambridge, MA, US 7 Cambridge Univ., Cambridge, UK 6 Dalhousie University, Halifax, Canada 6 Cambridge, University, Cambridge, England 6 Bristol, University, Bristol, England 5 Warszawa, Uniwersytet, Warsaw, Poland 5 Helsinki, University, Helsinki, Finland 5 Ege University, Izmir, Turkey 5 Adelaide, University, Adelaide, Australia 5 Aarhus, University, Aarhus, Denmark 4 York, University, York, England 4 York, University, Heslington, England 4 Southampton University, Southampton, England 4 Liverpool, University, England 4 Leeds University, England 4 Kansas, University, Lawrence, Kan. 4 Jadavpur University, Calcutta, India 4 Howard University, Washington, D.C. 4 Durham, University, United Kingdom 4 Durham University, England 4 Alaska, University, Fairbanks, Alaska 3 Waterloo, University, Waterloo, Ontario 3 Vanderbilt University, Nashville, Tenn. 3 Tennessee, University, Knoxville, Tenn. 3 Paris XI, Universite, Orsay, Essonne 3 London, University, Observatory, England 3 London, University, New Cross, England 3 Institute of Astronomy, Cambridge, England, UK 3 Cambridge University, The Observatories, Cambridge, England 3 Cambridge University, Cambridge 3 Cambridge University Institute of Astronomy 3 Bath, University, England 2 Warsaw, University, Observatory, Poland 2 Vanerbilt University, Nashville, TN, US 2 Turku, University, Turku, Finland 2 The University, St. Andrews, Scotland 2 Sussex, University, Falmer, England 2 St. Andrews, University, Fife, Scotland 2 Reading, University, Reading, Berks., England 2 Purdue University, Lafayette, Ind. 2 Open University, Milton Keynes, England 2 Melbourne, University, Parkville, Australia 2 London, University, London, England 2 Kumaun University, Naini Tal, India 2 Institute of Astronomy, Cambridge, England 2 Goteborg University, Goteberg, Sweden 2 Durham University, Durham, England 2 Cardiff, University College, England 2 Cairo University, Giza, Egypt 2 Aberdeen, University, Aberdeen, Scotland 2 Aarhus University, Aarhus C, Denmark 1 Wroclaw University, Wroclaw, Poland 1 Waterloo, University, Waterloo, Canada 1 Warszawa, Universytet, Warsaw, Poland 1 Warsaw, University, Bialystock, Poland 1 Warsaw Univesity, Warsaw, Poland 1 Vikram University, Ujjain, India 1 University of Cambridge, Cambridge, England 1 Turku, University, Tuorla, Finland 1 Turku, University, Piikkio, Finland 1 Turku University, Finland 1 Toronto, University, Scarborough, Canada 1 Thrace, University, Xanthi, Greece 1 Tel Aviv University, Ram-Aviv, Israel 1 Sussex, University, Sussex, England 1 Surrey, University, Guildford, England 1 Strathclyde University, Glasgow, Scotland 1 St. Andrews University, St. Andrews, Scotland 1 Silesia, University, Katowice, Poland 1 Salford University, Salford, Lancs., England 1 Pedagogical University, Bydgoszcz, Poland 1 Paris XI, Universite, Paris, France 1 Paris IX, Universite, Paris, France 1 Panjab University, Chandigarh, India 1 Oxford, University, Oxford, England 1 Oxford University Oxford, England 1 Oxford University Observatory, England 1 Nottingham University, Nottingham, England 1 Nanjing University, Nanjing, China 1 Nagoya University, Chikusa-ku, Japan 1 Marseille I, Universite, Marseille, France 1 London, University Observatory, England 1 Liverpool, University, Liverpool, England 1 Lethbridge, University, Canada 1 Kumaon University, Nainital, India 1 Kumaon University, Naini Tal, India 1 Keele, University, Keel, Staffs., England 1 John-Moores University, Liverpool, England, UK 1 Hull, University, Hull, Yorks., England 1 Hull, University, Hull, England 1 Howard University, Washington 1 Hokkaido University, Sapporo 060, Japan 1 Galway, University, Republic of Ireland 1 Durham, University, Durham, Leics., England 1 Drake University, Des Moines, Iowa 1 Copenhagen, University, Copehagen, Denmark 1 Catania University, Catania, Italy 1 Cambrige University, England 1 Cambridge,, University, England 1 Cambridge University, Observatories, Cambridge 1 Cambridge University, Engla 1 Cambridge University, Cambridge, UK 1 Cambridge University, Cambridge, MA 1 Cambridge University, Cambaridge, England 1 Cambridge University Observatories, England 1 Cambridge University Observatories, Cambridge, England 1 Cambridge University Institute of Astromomy, England 1 Cambridge Research, Champaign, IL, US 1 Calcutta, University, Calcutta, India 1 Calabria, Universita, Calabria, Italy 1 Cairo, University, Cairo, Egypt 1 Birmingham University, Birmingham, England 1 Andhra University, Waltair, India 1 Adelaide, University, Adelaide , Australia 104 225 Madrid, Universidad Autonoma, Spain 440 Hawaii, University, Honolulu 332 Texas, University, Austin, Tex. 246 Texas, University, Austin, TX 241 Padova, Universita, Padua, Italy 221 Montreal, Universite, Montreal, Canada 205 Michigan, University, Ann Arbor 129 Milano, Universita, Milan, Italy 116 Tokyo, University, Tokyo, Japan 108 Roma I, Universita, Rome, Italy 99 Rice University, Houston, TX 96 Hawaii, University, Honolulu, Hawaii 91 Sydney, University, Australia 85 Michigan, University, Ann Arbor, Mich. 79 Torino, Universita, Turin, Italy 79 Stanford University, Stanford, Calif. 78 Kyoto University, Kyoto, Japan 73 Nagoya University, Nagoya, Japan 51 Tohoku University, Sendai, Japan 50 Rice University, Houston, Tex. 45 Madrid, Universidad Complutense, Spain 43 Barcelona, Universidad, Spain 40 Napoli, Universita, Naples, Italy 35 Catania, Universita, Catania, Italy 31 La Plata, Universidad Nacional, Argentina 30 Athens, University, Athens, Greece 28 Aarhus Universitet, Denmark 27 Sophia University, Tokyo, Japan 26 Madrid, Universidad Autonoma, Spain 25 Roma II, Universita, Rome, Italy 22 Hokkaido University, Sapporo, Japan 19 Trieste, Universita, Trieste, Italy 19 Padova, Universita, Padua 16 Valencia, Universidad, Burjassot, Spain 16 Valencia, Universidad, Burjasot, Spain 15 Tokyo, University, Mitaka, Japan 15 Lecce, Universita, Lecce, Italy 15 Cantabria, Universidad, Santander, Spain 15 Adelaide, University, Australia 13 Madrid, Universidad Complutense, Madrid, Spain 13 Kyoto University, Uji, Japan 12 Picardie, Universite, Amiens, France 12 Palermo, Universita, Palermo, Italy 12 Osaka University, Osaka, Japan 12 La Plata, Universidad Nacional 12 Brandeis University, Waltham, Mass. 11 Moscow University, Moscow, Russia 11 Madrid, Univ. Autonoma, Spain 11 Granada, Universidad, Spain 11 Barcelona, Universidad, Barcelona, Spain 9 Ibaraki University, Mito, Japan 8 Univ. de Cantabria, Santander, Spain 8 Tufts University, Medford, Mass. 8 Tokai University, Hiratsuka, Japan 8 Patras, University, Patras, Greece 8 La Laguna, Universidad, Tenerife, Spain 7 Pavia, Universita, Italy 7 Madrid, Observatorio Astronomico, Spain 7 Cordoba, Universidad Nacional, Argentina 7 Aarhus, Universitet, Denmark 6 Zaragoza, Universidad, Saragossa, Spain 6 Rikkyo University, Tokyo, Japan 6 Niigata University, Niigata, Japan 6 Ankara, University, Ankara, Turkey 6 Aarhus University, Denmark 5 Tsurumi University, Yokohama, Japan 5 Santander, Universidad, Santander, Spain 5 Paris VII, Universite, Meudon, France 5 Nagoya University, Toyokawa, Japan 5 Madrid, Universidad Autonoma, Madrid, Spain 5 Madrid, Univ. Complutense, Spain 5 Madrid, Planetario, Spain 5 Kyushu University, Fukuoka, Japan 5 Kyoto, University, Kyoto, Japan 5 Kokugakuin University, Tokyo, Japan 5 Citta Universitaria, Catania, Italy 5 Cataluna, Universidad Politecnica, Spain 5 Bogazici University, Istanbul, Turkey 4 Zaragoza, Universidad, Spain 4 Valencia, Universidad, Spain 4 Utkal University, Bhubaneswar, India 4 Punjabi University, Patiala, India 4 Perugia, Universita, Perugia, Italy 4 Pavia, Universita, Pavia, Italy 4 Nagoya University, Furocho, Japan 4 La Laguna, Universidad, Spain 4 Hawaii, University, Maui, Hawaii 4 Hawaii, University, Kula, Hawaii 4 Gifu University, Gifu, Japan 4 Cukurova University, Adana, Turkey 3 Tokyo, University, Sagamihara, Japan 3 Texas, University, San Antonio 3 Texas, University, Richardson 3 Texas University, Austin, Tex. 3 Shizuoka University, Shizuoka, Japan 3 Porto, Universidade, Portugal 3 Pais Vasco, Universidad, Bilbao, Spain 3 Pahlavi University, Shiraz, Iran 3 Nancy I, Universite, Nancy, France 3 Miyazaki University, Miyazaki, Japan 3 L'Aquila, Universita, L'Aquila, Italy 3 Kanagawa University, Yokohama, Japan 3 Hawaii, University, Manoa, Hawaii 3 Haifa, University, Tivon, Israel 3 Extremadura, Universidad, Badajoz, Spain 3 Doshisha University, Kyoto, Japan 3 Calabria, Universita, Cosenza, Italy 2 Yunnan University, Kunming, China 2 Yebes, Centro Astronomico, Spain 2 Valencia, Universidad, Valencia, Spain 2 Utsunomiya University, Utsunomiya, Japan 2 Universidad Autonoma, Madrid, Spain 2 Trinity University, San Antonio, TX 2 Toyama University, Toyama, Japan 2 Toyama University, Takaoka, Japan 2 Tohoku University, Aoba, Japan 2 Texas University, Austin, TX 2 Shiraz, University, Shiraz, Iran 2 Padova, Universita, Padova, Italy 2 Ottawa, University, Ottawa, Canada 2 Nagoya, University, Japan 2 Montreal, University, Montreal, Canada 2 Messina, Universita, Messina, Italy 2 Madrid, Universidad Politecnica 2 Madrid, Universidad Complutense 2 Lund University, Lund, Sweden 2 Kinki University, Osaka, Japan 2 Kharkov University, Kharkov, Ukraine 2 Kagoshima University, Kagoshima, Japan 2 IRAM Granada, Granada, Spain 2 Hawaii, University, Mauna Kea 2 Hawaii University, Honolulu 2 Granada, Universidad, Granada, Spain 2 Genova, Universita, Genoa, Italy 2 Dokkyo University, Soka, Japan 2 Chalmers University, Onsala, Sweden 2 Cataluna, Universidad Politecnica 2 Cadiz, Universidad, Cadiz, Spain 2 Barcelona, Universidad Central, Spain 2 Barcelona, Universidad Autonoma, Spain 2 Barcelona, Universidad Autonoma, Barcelona, Spain 1 Zagreb, University, Yugoslavia 1 Yildiz University, Istanbul, Turkey 1 Washington University, Pullman, Wash. 1 Vigo, Universidad, Spain 1 Valladolid, Universidad, Spain 1 Univ. de Valencia, Spain 1 Trento, Universita, Povo, Italy 1 Tokyo, University, Tanashi, Japan 1 Tokyo University, Tokyo, Japan 1 Tohuku University, Sendai, Japan 1 Texas, University, San Antonio, TX 1 Texas, University, Austin TX 1 Texas, University, Arlington, Tex. 1 Texas University, Austin TX 1 Teikyo University, Utsunomiya, Japan 1 Tabriz, University, Iran 1 Sevilla, Universidad, Seville, Spain 1 Sevilla, Universidad, Cadiz, Spain 1 Santiago, Universidad, Chile 1 Santander, University, Santander, Spain 1 Salamanca, Universidad, Spain 1 Puerto Rico, Universidad, San Juan 1 Puebla, Univ. Autonoma, Mexico 1 Poona, University, Poona, India 1 Palermo, Universit1/4a, Palermo, Italy 1 Padova, Univesita, Padua, Italy 1 Padova, Universita, Italy 1 Padova, Universita and CNR, Padua, Italy 1 Oriente, Universidad, Cumana, Venezuela 1 Okayama University, Okayama, Japan 1 Niigata University, Ikarashi, Japan 1 Nagoya University, Chikusa, Japan 1 Montreal, Universite Montreal 1 Montreal Universite, Montreal, Canada 1 Montana, University, Missoula, Mont. 1 Milan, Universita, Milan, Italy 1 Messina, UniversitOea, Messina, Italy 1 Meisei University, Hino, Japan 1 Meerut, University, Meerut, India 1 Meerut University, Meerut, India 1 Maine, University, Orono, Me. 1 Madrid, Universidad Politecnica, Spain 1 Madrid, Universidad Compluteuse, Madrid, Spain 1 Madrid, Universidad Complutense, Madrid 1 Madrid, Universidad Autonoma, Canto Blanco, Spain 1 Madrid, Universidad Autonoma 1 Madrid, Univ. Politecnica, Spain 1 Madrid, Univ. Complutense 1 Madrid, Observatorio Astronomico 1 Lund, University, Lund, Sweden 1 Los Andes, Universidad, Bogota, Colombia 1 Laval, Universite, Quebec, Canada 1 Laurentian University, Sudbury, Ontario 1 La Plata, Universidad National, Argentina 1 La Plata, Universidad Nacional, La Plata 1 La Plata Universidad Nacional CONICET 1 Kyushu University, Fukuoda, Japan 1 Kyoto University, Sakyo, Japan 1 Kinki University, Higashi, Japan 1 Keio University, Tokyo, Japan 1 Istanbul, University, Istanbul, Turkey 1 Ibaraki University, Mita, Japan 1 Hosei University, Tokyo, Japan 1 Hokkaido University, Sappora, Japan 1 Hokaido University, Sapporo, Japan 1 Hiroshima University, Hiroshima, Japan 1 Hirosaki University, Hirosaki, Japan 1 Hawaii, Unversity, Honolulu 1 Hawaii, University, Kula, Maui, Hawaii 1 Hawaii University, Honolulu, Hawaii 1 Haifa, University, Oranim, Israel 1 Firenze, Universita, Arcetri, Italy 1 Evora, Universidade, Portugal 1 Ehime University, Matsuyama, Japan 1 Duke University, Durham, N.C. 1 Dayton, University, Dayton, Ohio 1 Cordoba, Universidad, Cordoba, Spain 1 Colgate University, Ithaca, N.Y. 1 Citta' Universitaria, Catania, Italy 1 Chile, Universidad, Santiago 1 Cadiz, Universidad, Cadiz 1 Burdwan, University, Burdwan, India 1 Bari, Universita, Italy 1 Barcelona, Univ. Autonoma, Spain 1 Ankara University, Ankara, Turkey 105 97 Royal Observatory, Edinburgh, Scotland 545 Royal Observatory, Edinburgh, Scotland 306 Geneve, Observatoire, Sauverny, Switzerland 166 Lowell Observatory, Flagstaff, AZ 95 EXOSAT Observatory, Noordwijk, Netherlands 79 Armagh Observatory, Northern Ireland 71 Edinburgh, University, Edinburgh, Scotland 66 McDonald Observatory, Austin 39 Royal Observatory, Edinburgh, United Kingdom 30 Lowell Observatory, Flagstaff, AZ, US 28 Geneva Observatory, Sauverny, Switzerland 26 Tuorla Observatory, Piikkio, Finland 26 Konkoly Observatory, Budapest, Hungary 25 Allegheny Observatory, Pittsburgh, PA 24 Dunsink Observatory, Dublin, Ireland 17 University Observatory, Glasgow, Scotland 16 Carter Observatory, Wellington, New Zealand 15 University Observatory, Saint Andrews, Scotland 14 Roma, Osservatorio Astronomico, Rome 13 Armagh Observatory, United Kingdom 11 Yunnan Observatory, Kunming, China 11 Onsala Space Observatory, Goteborg, Sweden 11 Biruni Observatory, Shiraz, Iran 10 Vatican Observatory, Vatican City State 10 Allegheny Observatory, Pittsburgh, Pa. 8 Sproul Observatory, Swarthmore, Pa. 8 Sproul Observatory, Swarthmore, PA 8 Royal Observatory, Edinburgh, UK 8 Bosscha Observatory, Lembang, Indonesia 7 Perth Observatory, Bickley, Australia 6 Royal Observatory, Scotland 6 Royal Observatory, Edinburgh, Scotland, UK 6 Lund Observatory, Lund, Sweden 5 Yunnan Observatory, Kunming 4 ISO Observatory, Noordwijk, Netherlands 4 Geneve Observatoire, Sauverny, Switzerland 4 Compton Observatory, Greenbelt, MD 4 Armagh Observatory, Armagh, N. Ireland, UK 3 Yerkes Observatory, Chicago, IL 3 Royal Observatory Edinburgh, Edinburgh, UK 3 Roma, Osservatorio Astronomico 3 Lund, Observatory, Lund, Sweden 3 Lowell Observatory, Flagstaff 3 Lick Observatory, Mount Hamilton, CA 3 Edinburgh, Royal Observatory, Edinburgh, Scotland 3 Dunsink Observatory, Castleknock, Ireland 3 Barksdale Observatory, Winter Park, FL 3 Auroral Observatory, Tromso, Norway 3 Armagh Observatory, Northern Ireland, UK 3 Armagh Observatory, Armagh, uk 3 Armagh Observatory, Armagh, UK 2 Royal Observatory, Scotland, UK 2 Royal Observatory, Blackford Hill, Edinburgh, Scotland 2 Radio Observatory, Dwingeloo, Netherlands 2 Napier Univ., Edinburgh, Scotland, UK 2 Geneve, Observatoire, Geneva, Switzerland 2 Edinburgh University, Edinburgh, Scotland 2 Bosscha Observatory, Bandung, Indonesia 1 Vilnius Observatory, Vilnius, Lithuania 1 Vatican Observatory Research Group 1 University, Observatory, Saint Andrews, Scotland 1 Univ. of Edinburgh, Edinburgh, Scotland, UK 1 Univ. Observatory, Munich, Germany 1 Tuorla Observatory, Tuorla, Spain 1 Tuorla Observatory, Piikio, Finland 1 Tuorla Observaoty, Piikkio, Finland 1 Shaanxi Observatory, Lintong, China 1 Royal Observatory, London, England 1 Royal Observatory, Edingburgh, Scotland 1 Royal Observatory, Edinburgh, England 1 Royal Observatory, Edinburg, England 1 Royal Observatory Edinburgh, Scotland 1 Radio Observatory, Columbus, OH 1 Radio Observatory, Ann Arbor, Mich. 1 Radio Observatory, Ann Arbor, MI 1 Perth Observatory, Perth, Australia 1 Napier College, Edinburgh, Scotland 1 Midway Observatory, Brisbane, Australia 1 McDonald Observatory, Mount Locke, TX 1 Louth Observatory, Sedro Woolley, WA 1 Louth Observatory, Sedro Wooley, WA 1 Landis Observatory, McDonough, GA, US 1 Kwasan Observatory, Kyoto, Japan 1 Hida Observatory, Gifu, Japan 1 Geneve, Observatoire, Souverny, Switzerland 1 Geneva, Observatory, Sauverny, Switzerland 1 Geneva, Observatoire, Sauverny, Switzerland 1 Exosat Observatory, Leiden, Netherlands 1 Exosat Observatory, Darmstadt, West Germany 1 Dunsink Observatory, Dunsink, Ireland 1 Dunsink Observatory, Castlenock, Ireland 1 College Observatory, Danbury, CT 1 Buruni Observatory, Shiraz, Iran 1 Battelle Observatory, Richland 1 Armagh Observatory, Ireland 1 Armagh Observatory, Armagh, N. Ireland 1 Armagh Observatory, Armagh, Ireland, UK 1 Armagh Observatory, Armagh, Ireland 106 13 Mullard Radio Astronomy Observatory, Cambridge, England 305 Mullard Radio Astronomy Observatory, Cambridge, England 22 Mullard Radio Astronomy Observatory, Cambridge, United Kingdom 6 Mullard Radio Astronomy Observatory, Cambridge, UK 4 Nuffield Radio Astronomy Observatory, Jodrell Bank, England 3 Nuffield Radio Astronomy Observatories, Jodrell Bank, England 2 Radio Astronomy Observatory, Torun, Poland 2 Mullard Radio Astronomy Observatory, Cambridge, Mass. 2 Mullard Radio Astronomy Observatory, Cambridge 1 Mullard Radio Observatory, Cambridge, England 1 Mullard Radio Astronomy, Cambridge, UK 1 Mullard Radio Astronomy Obsrevatory, Cambridge, England, UK 1 Daeduk Radio Astronomy Observatory, Daejun, Korea 1 Astronomy Observatory, Cambridge, England 107 11 IBM Thomas J. Watson Research Center, Yorktown Heights, NY 53 IBM Thomas J. Watson Research Center, Yorktown Heights, NY 22 IBM Thomas J. Watson Research Center, Yorktown Heights, N.Y. 5 IBM Thomas J. Watson Research Center, Yorktown Heights 3 T. J. Watson Research Center, Yorktown Heights, NY, US 2 T.J. Watson Research Center, Yorktown Heights, NY, US 1 IBM, Thomas J. Watson Research Center, Yorktown Heights, NY 1 IBM Watson Research Center, Yorktown Heights, NY, US 1 IBM Watson Research Center, Yorktown Heights, NY 1 IBM Watson Research Center, Yorktown Heights 1 IBM Thomas J. Watson Research Center, Yorktown Heights, NY, US 1 IBM T. J. Watson Research Center, Yorktown Heights, NY, US 108 13 Stichting Radiostraling van Zon en Melkweg, Dwingeloo, Netherlands 79 Stichting Radiostraling van Zon en Melkweg, Dwingeloo, Netherlands 10 Stichting Radiostraling van zon en Melkweg, Dwingeloo, Netherlands 4 Stichting Radioastraling van Zon en Melkweg, Dwingeloo, Netherlands 3 Stichting Radiostraling van Zon en Melkweg, Groningen, Netherlands 1 Stichtung Radiostraling van Zon en Melkweg, Dwingeloo, Netherlands 1 Stichtung Radioastraling van zon en Melkweg, Dwingeloo, Netherlands 1 Stichting, Radiostraling van Zon en Melkweg, Dwingeloo, Netherlands 1 Stichting Radiostraling von Zon en Melkweg, Dwingeloo, Netherlands 1 Stichting Radiostraling van zon en Melkweg, Groningen, Netherlands 1 Stichting Radiostraling van Zon in Melkweg, Dwingeloo, Netherlands 1 Stichting Radiostraling van Zon en Melkweg, Westerbork, Netherlands 1 Stichting Radiostraling Van Zon en Melkweg, Dwingeloo, Netherlands 1 Stichting Radiostralinaj van Zon en Milkweg, Dwingeloo, Netherlands 109 34 Groningen, Rijksuniversiteit, Groningen, Netherlands 364 Groningen, Rijksuniversiteit, Groningen, Netherlands 281 Groningen, Rijksuniversiteit, Netherlands 276 Leiden, Rijksuniversiteit, Sterrewacht, Netherlands 236 Leiden, Rijksuniversiteit, Sterrewacht, Leiden, Netherlands 94 Utrecht, Rijksuniversiteit, Utrecht, Netherlands 50 Utrecht, Rijksuniversiteit, Netherlands 41 Leiden, Rijksuniversiteit, Leiden, Netherlands 7 Vrije Universiteit, Amsterdam, Netherlands 6 Univ. of Groningen, Groningen, Netherlands 6 Nijmegen, Katholieke Universiteit, Nijmegen, Netherlands 5 Groningen Rijksuniversiteit, Groningen, Netherlands 4 Leiden Rijksuniversiteit, Sterrewacht, Netherlands 4 Groningen, Rijksuniversiteit, Groningen 3 Leiden, Rijksuniversiteit Sterrewacht, Netherlands 2 Leiden, Rijksuniversiteit, Sterrenwacht, Leiden, Netherlands 2 Groningen, Rijksuniversitet, Groningen, Netherlands 1 Utrecht, Rijksuniversitet, Utrecht, Netherlands 1 Utrecht, Rijksuniversiteit,Netherlands 1 Utrecht, Rijksuniversiteit, Sterrewacht, Netherlands 1 Utrecht Rijksuniversiteit, Utrecht, Netherlands 1 Nijmegen, Universiteit, Nijmegen, Netherlands 1 Leiden, Rjiksuniversiteit, Sterrewacht, Netherlands 1 Leiden, Rijkuniversiteit, Sterrewacht, Netherlands 1 Leiden, Rijksunivesiteit, Sterrewacht, Netherlands 1 Leiden, Rijksuniversitiet, Leiden, Netherlands 1 Leiden, Rijksuniversitet, Sterrewacht, Netherlands 1 Leiden, Rijksuniversiteit, Sterrenwacht, Netherlands 1 Leiden, Rijksuniversiteit, Sterewacht, Leiden, Netherlands 1 Groningen, Rijkuniversiteit, Groningen, Netherlands 1 Groningen, Rijksuniversteit, Groningen, Netherlands 1 Groningen, Rijksuniversiteit, Groningen, West Germany 1 Groningen, Rijksuniversitaet, Groningen, Netherlands 1 Groningen University, Groningen, Netherlands 1 Groningen State University, Groningen, Netherlands 110 40 Heidelberg, Universitaet, Federal Republic of Germany 119 Heidelberg, Universitaet, Heidelberg, West Germany 78 Bonn, Universitaet, Federal Republic of Germany 71 Heidelberg, Universitaet, Federal Republic of Germany 52 Muenchen, Universitaet, Munich, Federal Republic of Germany 48 Bochum, Ruhr-Universitaet, Federal Republic of Germany 37 Tuebingen, Universitaet, Federal Republic of Germany 29 Muenster, Universitaet, Federal Republic of Germany 29 Koeln, Universitaet, Cologne, Federal Republic of Germany 23 Berlin, Technische Universitaet, Federal Republic of Germany 19 Wuerzburg, Universitaet, Federal Republic of Germany 18 Kiel, Universitaet, Federal Republic of Germany 5 Heidelberg, Universitaet, Heidelberg 5 Bochum, Sternwarte, Federal Republic of Germany 4 Hannover, Universitaet, Hanover, Federal Republic of Germany 4 Goettingen, Universitaets-Sternwarte, Federal Republic of Germany 3 DLR, Oberpfaffenhofen, Federal Republic of Germany 2 Sonneberg, Sternwarte, Federal Republic of Germany 2 Mainz, Universitaet, Federal Republic of Germany 2 Koeln, Universitaet, Federal Republic of Germany 2 Heidelberg, Universitat, Heidelberg, West Germany 2 Goettingen, Universitaet, Federal Republic of Germany 2 Erlangen-Nuernberg, Universitaet, Erlangen, Federal Republic of Germany 2 Duesseldorf, Universitaet, Federal Republic of Germany 2 DLR, Cologne, Federal Republic of Germany 2 Bayreuth, Universitaet, Federal Republic of Germany 1 Rittal-Werk, Herborn, Federal Republic of Germany 1 MBB GmbH, Munich, Federal Republic of Germany 1 Leipzig, Universitaet, Federal Republic of Germany 1 Jenoptic Jena GmbH, Federal Republic of Germany 1 Hamburg, Universitaet, Sternwarte, Federal Republic of Germany 1 Hamburg, Universitaet, Federal Republic of Germany 1 Hamburg, Universitaet der Bundeswehr, Federal Republic of Germany 1 Goettingen, Universitaetssternwarte, Federal Republic of Germany 1 Frankfurt am Main, Universitaet, Federal Republic of Germany 1 DLR, Wessling, Federal Republic of Germany 1 DFVLR, Wessling, Federal Republic of Germany 1 DFVLR, Wesseling, Federal Republic of Germany 1 DFVLR, Oberpfaffenhofen, Federal Republic of Germany 1 Bonn, University, Federal Republic of Germany 1 Babalsberg, Sternwarte, Federal Republic of Germany 111 11 NASA, Goddard Institute for Space Studies, New York, N.Y. 88 NASA, Goddard Institute for Space Studies, New York, N.Y. 59 NASA, Goddard Institute for Space Studies 56 NASA, Goddard Institute for Space Studies, New York 27 NASA, Goddard Institute for Space Studies, New York, NY 9 NASA, Goddard Inst. for Space Studies, New York 6 NASA. Goddard Inst. for Space Studies, New York, NY, US 3 NASA. Goddard Institute for Space Studies, New York, NY, US 1 Nasa, Goddard Institute for Space Studies, New York 1 NASA, Goddard Institute for Space Studies, NY 1 NASA, Goddard Institut for Space Studies, New York, N.Y. 1 Goddard Institute for Space Studies, New York 112 6 Nordisk Institut for Teoretisk Atomfysik, Copenhagen, Denmark 64 Nordisk Institut for Teoretisk Atomfysik, Copenhagen, Denmark 1 Nordisk Institute for Teoretisk Atomfysik, Copenhagen, Denmark 1 Nordisk Institut for Teoritisk Atomfysik, Copenhagen, Denmark 1 Nordisk Institut for Teoretisk Atomphysik, Copenhagen, Denmark 1 Nordisk Institut for Teoretisk Atomfysik 1 Nordisk Institut for Teoretisk Atmofysik, Copenhagen, Denmark 113 7 Queen Mary and Westfield College, London, United Kingdom 73 Queen Mary and Westfield College, London, United Kingdom 51 Queen Mary and Westfield College, London, England 8 Queen Mary and Westfield Coll., London Univ., London, UK 3 Queen Mary and Westfield Coll., London, UK 2 Queen Mary and Westfield College, London 1 Queen Mary and Westfield College, London, England, UK 1 Queen Mary & Westfield College, London, UK 114 12 New Mexico Institute of Mining and Technology, Socorro 50 New Mexico Institute of Mining and Technology, Socorro 15 New Mexico Inst. of Mining and Technology, Socorro 14 New Mexico Institute of Mining and Technology, Socorro, N. Mex. 8 New Mexico Institute of Mining and Technology, Socorro, NM 5 New Mexico Institute of Mining and Technology 3 New Mexico Institute of Mining and Technology, Socorro, NM, US 2 New Mexico Institute of Mining and Technology, Soccoro 2 New Mexico Inst. of Mining and Tech., Socorro, NM, US 1 New Mexico Institute for Mining and Technology, Socorro 1 New Mexico Instituite of Mining and Technology, Socorro 1 New Mexico Inst. of Mining and Technology, Socorro, NM, US 1 New Mexico Inst. of Mining and Technology 115 18 CEA, Service d'Astrophysique, Gif-sur-Yvette, France 162 CEA, Service d'Astrophysique, Gif-sur-Yvette, France 18 CEA, Service de Physique Theorique, Gif-sur-Yvette, France 10 CEA, Service d'Astrophysique, Gif-sur-Yvette 9 Service d'Astrophysique, Gif-sur-Yvette, France 9 CEN de Saclay, Gif-sur-Yvette, France 4 C.E. Saclay, Service d'Astrophysique, Gif-sur-Yvette, France 3 Service d'Astrophysique, Gif/Yvette, France 3 Service d'Astrophysique, Gif sur Yvette, France 3 CE Saclay D.A.P.N.I.A. Service d' Astrophysique, Gif sur Yvette, France 2 Service d'Astrophyique, Gif-sur-Yvette, France 2 CEN, Service d'Astrophysique, Gif-sur-Yvette, France 2 CEA, Laboratoire National Saturne, Gif-sur-Yvette, France 1 Service de Physique Theorique, Gif-sur-Yvette, France 1 Service de Physique Theorique, Gif- sur-Yvette, France 1 CEA, Service d'Astrophysique, Guf-sur-Yvette, France 1 CEA, Service d' Astrophysique, Gif-sur-Yvette, France 1 CEA, Section d'Astrophysique, Gif-sur-Yvette, France 1 CEA, DSM/ DAPNIA/Service d'Astrophysique, Gif sur Yvette, France 116 44 Hamburger Sternwarte, Hamburg, Germany 162 Hamburger Sternwarte, Hamburg, West Germany 47 Hamburger Sternwarte, Hamburg, Germany 18 Remeis-Sternwarte, Bamberg, West Germany 13 Univ. Wuerzburg, Wuerzburg, Germany 13 Landessternwarte, Heidelberg, Germany 8 MPI fuer Astronomie, Heidelberg, Germany 6 Universitat Wurzburg, Wurzburg, Germany 6 Hamburger Sternwarte, Hamburg-Bergedorf, Germany 4 Univ. Hamburg, Gojenbergsweg, Hamburg, Germany 3 Universitat Hamburg, Hamburg, Germany 3 Muenchen, Univ.-Sternwarte, Munich, Germany 3 Hamburg, Universitaet, Sternwarte, Hamburg, West Germany 3 Bamberg, Remeis-Sternwarte, Bamberg, West Germany 2 Univ.-Sternwarte, Munich, Germany 2 Univ. Erlangen-Nurnberg, Bamburg, Germany 2 Univ. Erlangen-Nurnberg, Bamberg, Germany 2 Sternwarte Sonneberg, East Germany 2 Heidelberg Univ., Heidelberg, Germany 2 Hamburger-Sterwarte, Hamgurg-Bergedorf, Germany 2 Hamburger Sternwarte, Hamburg 1 Universitat Wuerzburg, Wuerzburg, Germany 1 Universitaet Wuerzburg, Wuerzburg, Germany 1 Univ.-Sternwarte, Jena, Germany 1 Univ. Wurzburg, Wurzburg, Germany 1 Univ. Erlangen-Nurberg, Bamberg, Germany 1 Univ. Erlangen-Nuernberg, Bamberg, Germany 1 Thueringer Landessternwarte, Tautenburg, Germany 1 Thueringer Landessternwarte, Jena, Germany 1 Space Telescope, Garching, Germany 1 Sonneberg, Sternwarte, East Germany 1 Remeis-Sternwarte, Bamberg, Germany 1 Remeis Sternwarte, Bamberg, Germany 1 Landessternwarte, Heidelburg, Germany 1 Landessternwarte Heidelberg, Germany 1 Hamburger Sterwarte, Hamburg, Germany 1 Hamburger Sternwarte, Germany 1 Hamburger Sternwarte 1 Hamburg, Sternwarte, Hamburg, West Germany 1 Hamberger Sternwarte, Hamburg, Germany 1 Dr.-Remeis-Sternwarte, Bamberg, Germany 1 Dr. Remeis-Sternwarte, Bamberg, Germany 1 Bochum, Sternwarte, West Germany 1 Bochum, Sternwarte, Germany 1 An der Sternwarte, Postdam, Germany 117 55 Universitaets-Sternwarte, Goettingen, West Germany 128 Universitaets-Sternwarte, Goettingen, West Germany 47 Universitaets-Sternwarte, Munich, West Germany 20 Kiel, Neue Universitaet, Sternwarte, Kiel, West Germany 11 Universitaets-Sternwarte, Goettingen, Germany 11 Univ.-Sternwarte, Goettingen, Germany 10 Universitat Tuebingen, Tuebingen, Germany 9 Universitaetssternwarte, Goettingen, West Germany 9 Universitaets-Sternwarte, Vienna, Austria 8 Landessternwarte, Koenigstuhl, West Germany 7 Universitats-Sternwarte, Goettingen, Germany 6 Univ. Sternwarte, Gottingen, Germany 5 Universitaets-Sternwarte, Gottingen, Germany 5 Universitaets-Sternwarte Muenchen, Munich, Germany 4 Universitaets-Sternwarte, Bonn, West Germany 4 Univ.-Sternwarte Goettingen, Goettingen, Germany 4 Goettingen, Universitaet, Sternwarte, Goettingen, West Germany 3 Universitaetssternwarte, Munich, West Germany 3 Universitaets-Sternwarte, Jena, East Germany 3 Universitaets-Sternwarte, Graz, Austria 3 Universitaets-Sternwarte, Goettingen 3 Universitaets-Sternwarte, Bonn, Germany 3 Universitaet-Sternwarte, Goettingen, West Germany 3 Univ. Sternwarte Goettingen, Goettingen, Germany 3 Muenchen, Universitaetssternwarte, Munich, West Germany 3 Muenchen, Universitaets-Sternwarte, Munich, West Germany 2 Universitatssternwarte Goettingen, Goettingen, Germany 2 Universitats-Sternwarte, Muenchen, Germany 2 Universitats-Sternwarte Gottingen, Gottingen, Germany 2 Universitats-Sternwarte Goettingen, Goettingen, Germany 2 Universitaets-Sternwarte, Jena, Germany 2 Universitaets-Sternwarte, Jena 1 Wilhelm-Foerster-Sternwarte, Berlin, West Germany 1 Wilhelm Foerster Sternwarte, Berlin, West Germany 1 Universitatssternwarte, Vienna, Austria 1 Universitats-Sternwarte, Vienna, Austria 1 Universitats-Sternwarte, Jena, Germany 1 Universitats-Sternwarte, Bonn, West Germany 1 Universitats-Sternwarte Bonn, Daun, Germany 1 Universitaetsternwarte, Vienna, Austria 1 Universitaetssternwarte, Vienna, Austria 1 Universitaetssternwarte, Muenchen, Germany 1 Universitaetssternwarte, Graz, Austria 1 Universitaetssternwarte Goettingen, Goettingen, Germany 1 Universitaets-Sternwarte, Munich, Germany 1 Universitaets-Sternwarte, Muenich, West Germany 1 Universitaets-Sternwart, Munich, West Germany 1 Universitaets-Sternwart Goettingen, Goettingen, Germany 1 Universitaets, Sternwarte, Goettingen, West Germany 1 Universitaets Sternwarte, Munich, West Germany 1 Universitaets Sternwarte, Goettingen, West Germany 1 Universitaet-Sternwarte, Munich, West Germany 1 Muenchen, Universitaets- Sternwarte, Munich, West Germany 1 Kiel, Universitaet, Sternwarte, Kiel, West Germany 1 Kiel, Neue Universitat, Sternwarte, Kiel, West Germany 1 Kiel, Neue Universitaet, Stenwarte, Kiel, West Germany 118 12 Five College Radio Astronomy Observatory, Amherst, MA 183 Five College Radio Astronomy Observatory, Amherst, MA 59 Five College Radio Astronomy Observatory 18 Five College Radio Astronomy Observatory, Amherst 14 Radio Astronomy Observatory, Ann Arbor, MI 14 Five College Radio Astronomy Observatory, Amherst, Mass. 2 Five College Radio Observatory, Amherst, MA 1 Torun Radio Astronomy Observatory, Poland 1 Five College Radio Astronomy Ovservatory, Amherst, MA 1 Five College Radio Astronomy Observatory, Pasadena, CA 1 Five College Radio Astronomy Observatory, Amherst MA 1 Five College Observatory, Amherst, Mass. 1 Five College Astronomy Observatory, Amherst, MA 119 514 California, University, Berkeley, CA 806 California, University, Berkeley 418 California, University, Berkeley, Calif. 379 Maryland, University, College Park 370 Cornell University, Ithaca, NY 357 Illinois, University, Urbana 346 California, University, Berkeley, CA 315 Maryland, University, College Park, Md. 296 Washington, University, Seattle 282 Colorado, University, Boulder 267 California, University, Los Angeles 225 Maryland, University, College Park, MD 212 Arizona, University, Tucson 208 Johns Hopkins University, Baltimore, MD 208 Illinois, University, Urbana, Ill. 197 Illinois, University, Urbana, IL 190 Columbia University, New York 182 Minnesota, University, Minneapolis 173 California Univ., Berkeley 167 Arizona, University, Tucson, Ariz. 164 Virginia, University, Charlottesville 162 California, University, La Jolla 159 Cornell University, Ithaca, N.Y. 156 Hawaii, University, Honolulu, HI 139 California, University, Los Angeles, CA 138 Chicago, University, Chicago, IL 133 Colorado, University, Boulder, Colo. 129 California, University, La Jolla, Calif. 126 Columbia University, New York, NY 125 Columbia University, New York, N.Y. 125 Bologna, Universita, Italy 124 Victoria, University, Canada 118 Washington, University, Seattle, WA 118 California, University, Los Angeles, Calif. 114 Florida, University, Gainesville 112 California, University, La Jolla, CA 110 Colorado, University, Boulder, CO 109 Northwestern University, Evanston, IL 108 Arizona, University, Tucson, AZ 106 Tel Aviv University, Tel Aviv, Israel 97 Minnesota, University, Minneapolis, MN 93 Edinburgh, University, Scotland 90 Calgary, University, Canada 86 California, University, Los Alamos, N. Mex. 80 Washington, University, Seattle, Wash. 77 Indiana University, Bloomington 74 Massachusetts, University, Amherst, MA 72 Michigan, University, Ann Arbor, MI 71 North Carolina, University, Chapel Hill 68 California, University, Santa Barbara 65 California, University, Santa Cruz 64 California, University, San Diego, Calif. 62 New Mexico, University, Albuquerque 61 Florida, University, Gainesville, FL 60 Virginia, University, Charlottesville, Va. 60 Virginia, University, Charlottesville, VA 59 Birmingham, University, England 57 Duke University, Durham, NC 56 Wisconsin, University, Madison, Wis. 55 Oklahoma, University, Norman 54 Catania, Universita, Italy 54 California, University, Irvine 52 California Univ., La Jolla 51 Kansas, University, Lawrence 50 Pennsylvania, University, Philadelphia 48 Johns Hopkins University, Baltimore, Md. 47 Wisconsin, University, Madison, WI 47 Stanford University, Stanford, CA 47 Athens, University, Greece 45 Kentucky, University, Lexington 45 California Univ., Los Angeles 44 Cornell University, Ithaca, NY, US 43 Rutgers University, Piscataway, NJ 42 Glasgow, University, Scotland 42 California Univ., Santa Barbara 40 Oregon, University, Eugene 40 Iowa, University, Iowa City, Iowa 40 Iowa, University, Iowa City, IA 39 Tufts University, Medford, MA 39 Brigham Young University, Provo, UT 38 Paris XI, Universite, Orsay, France 36 Wyoming, University, Laramie 36 California, University, Livermore, Calif. 35 Kentucky, University, Lexington, KY 34 Paris VII, Universite, France 34 Indiana University, Bloomington, IN 34 California, University, Livermore, CA 32 Oregon, University, Eugene, Ore. 31 Washington University, St. Louis, MO 31 Oklahoma, University, Norman, Okla. 31 Columbia University, New York, NY, US 31 California, University, San Diego 31 California, University, Livermore 31 California, University, Davis 30 Salonika, University, Salonika, Greece 30 Ohio State University, Columbus, OH 29 Wyoming, University, Laramie, WY 28 Pittsburgh, University, Pittsburgh, PA 28 George Mason University, Fairfax, VA 27 Whitin Observatory, Wellesley, MA 27 Toledo, University, Toledo, Ohio 27 New Mexico, University, Albuquerque, NM 26 Salonika, University, Greece 25 New York University, New York, NY 24 Hawaii, University, Mauna Kea, HI 24 California Univ., Santa Cruz 24 Brandeis University, Waltham, MA 23 Oregon, University, Eugene, OR 23 New York University, New York, N.Y. 23 California, University, Santa Barbara, CA 23 California Univ., Berkeley, CA, US 22 Alabama, University, University, Ala. 21 Toledo, University, Toledo, OH 21 St. Andrews, University, Scotland 21 Southern California, University, Los Angeles, CA 21 Paris VII, Universite, Paris, France 21 Oklahoma, University, Norman, OK 21 Nebraska, University, Lincoln, NE 21 California, University, Irvine, Calif. 20 Ohio State University, Columbus, Ohio 20 California, University, Santa Cruz, Calif. 19 Wyoming, University, Laramie, Wyo. 19 Nebraska, University, Lincoln, Neb. 18 California, University, Santa Barbara, Calif. 17 Villanova University, Villanova, PA 17 Kentucky, University, Lexington, Ky. 17 Johns Hopkins University, Laurel, MD 17 California, University, Irvine, CA 16 Vanderbilt University, Nashville, TN 16 Patras, University, Greece 16 Crete, University, Heraklion, Greece 16 California, University, Santa Cruz, CA 15 Rochester, University, Rochester, NY 15 Palermo, Universita, Italy 15 Kansas, University, Lawrence, KS 15 California, University, San Diego, CA 14 Rochester, University, Rochester, N.Y. 14 Paris VI, Universite, France 13 Valparaiso University, IN 13 Boston University, Boston, MA 12 Washington University, St. Louis, Mo. 12 Villanova University, Villanova, Pa. 12 Lehigh University, Bethlehem, PA 12 Drexel University, Philadelphia, PA 12 Cincinnati, University, Cincinnati, OH 12 California, University 12 Arkansas, University, Little Rock 12 Alabama, University, Huntsville, AL 11 Stanford University, Stanford, CA, US 11 Southern California, University, Los Angeles, Calif. 11 Fordham University, Bronx, N.Y. 11 Delhi, University, Delhi, India 11 Delaware, University, Newark, Del. 10 Vermont, University, Burlington 10 Nevada, University, Las Vegas 10 Georgia, University, Athens 9 Southern California, University, Los Angeles 9 North Carolina, University, Chapel Hill, NC 9 Delaware, University, Newark, DE 9 Colgate University, Hamilton, NY 9 Cassino, Universita, Italy 9 California, University, Riverside 8 Univ. of California at Berkeley, Berkeley, CA, US 8 Stanford University, Stanford 8 Oxford, University, United Kingdom 8 Goteborg, Universitet, Sweden 8 Copenhagen, University, Denmark 8 Cairo University, Egypt 8 Arkansas, University, Fayetteville 8 Alabama, University, University 7 Toronto, University, Toronto 7 Keele University, Keele, UK 7 Houston, University, Houston, Tex. 7 Denison University, Granville, OH 7 California, University, Berkeley and Livermore 6 Wollongong, University, Australia 6 Southern California, University, Tucson, AZ 6 Manitoba, University, Winnipeg, Canada 6 Ioannina, University, Greece 6 Helsinki, University, Finland 6 Hebrew University, Jerusalem, Israel 6 Goteborg, University, Sweden 6 Durham University, Durham, UK 6 Cincinnati, University, OH 6 Calabria, Universita, Rende, Italy 5 Vermont, University, Burlington, VT 5 Southwestern University, Georgetown, TX 5 Sofia, University, Bulgaria 5 Princeton University Observatory 5 Oxford University, Oxford 5 Oslo, University, Norway 5 Missouri, University, St. Louis, MO 5 Michigan, University, Dearborn 5 Lehigh University, Bethlehem, Pa. 5 Lausanne, Universite, Switzerland 5 Illinois, University, Champaign 5 Columbia, University, New York, NY 5 California, University, Riverside, Calif. 5 California, University, Berkeley and Santa Barbara 5 California University, Berkeley, Calif. 5 Aarhus, University, Denmark 4 Wisconsin, University, Milwaukee, Wis. 4 Wisconsin, University, Milwaukee 4 Wisconsin, University, Eau Claire 4 Widener University, Chester, PA 4 Wesleyan University, Middletown, CT 4 Univ. of California, Berkeley, Berkeley, CA, US 4 Univ of California, Berkeley, CA, US 4 Tel-Aviv University, Tel-Aviv, Israel 4 Tel Aviv, University, Tel Aviv, Israel 4 Paris XI, Universite, France 4 Orleans, Universite, Orleans, France 4 Oakland University, Rochester, MI 4 North Carolina, University, Greensboro 4 North Carolina, University, Asheville 4 New York University, New York, NY, US 4 Nevada, University, Las Vegas, NV 4 Maryland, University, Greenbelt, Md. 4 Indiana, University, Bloomington, Ind. 4 Edinburgh University, Scotland 4 Drake University, Des Moines, IA 4 Denver, University, Denver, CO 4 Chalmers University of Technology 4 California, University, Santa Barbara and Berkeley, CA 4 California, University, Los Alamos, NM 4 California, University, Davis, Calif. 4 California, University, Davis and Livermore, Calif. 4 California University, Berkeley, CA 4 California Univ., Irvine 4 California State University, Fullerton, Calif. 4 Arkansas, University, Fayetteville, AR 3 Yale University, Yale, CT, US 3 Wisconsin, University, Eau Claire, WI 3 West Virginia University, Morgantown 3 Tulane University, New Orleans, LA 3 Texas, University, Dallas, Tex. 3 Tennessee, University, Knoxville, TN 3 Southern California, University, Tucson, Ariz. 3 Southern California Univ., Los Angeles, CA 3 Oxford University, Oxford, UK 3 Northern Colorado, University, Greeley, CO 3 Nevada, University, Las Vegas, Nev. 3 Melbourne, University, Australia 3 Maryland, University, Baltimore, MD 3 Maryland, University, Adelphi, MD 3 Maryland University, College Park, MD 3 Maine, University, Orono, ME 3 Loyola University, Chicago, IL 3 Indiana University, Gary, IN 3 Hawaii University, Honolulu, HI 3 Denver, University, Denver, Colo. 3 Colorado University, Boulder, Colo. 3 Cape Town, University, Rondebosch 3 California, University, Los Alamos 3 California Univ., San Diego 3 California Univ., Davis 3 California State University, Northridge, Calif. 3 Calgary, University, Calgary, Canada 3 Calgary, University, Alberta, Canada 3 Boston, University, Boston, MA 3 Beijing Normal University, Beijing, China 3 Ball State University, Muncie, IN 3 Arya Mehr University, Teheran, Iran 2 Wisconsin, University, Eau Claire, Wis. 2 Utsunomiya University, Mine, Japan 2 South Florida, University, Tampa, FL 2 Simon Frazer University, Burnaby, Canada 2 Salerno, Universita, Italy 2 Rochester, University, Rochester 2 Queen's University, Belfast, UK 2 Puerto Rico, University, Rio Piedras 2 Osaka Kyoiku University, Osaka, Japan 2 Orleans, Universite, France 2 Old Dominion University, Norfolk, VA 2 Oklahoma University, Norman, Okla. 2 Ohio Wesleyan University, Delaware, OH 2 Northern Iowa, University, Cedar Falls, Iowa 2 New York, City University, New York, N.Y. 2 Montana, University, Missoula, MT 2 Missouri, University, St. Louis, Mo. 2 Missouri, University, Columbia, MO 2 Missouri, University, Columbia 2 Miami, University, Coral Gables, FL 2 Maryland University, College Park, Md. 2 London, University, England 2 Lille I, Universite, Lille, France 2 Lawrence Berkeley Lab., Berkeley, CA 2 Kentucky University, Lexington 2 Johns Hopkins University, Laurel, Md. 2 Jagiellonian University, Krakow, Poland 2 Istanbul University, Turkey 2 Illinois, University, Chicago 2 Illinois University, Urbana 2 Hofstra University, Hempstead 2 Hiroshima University, Takehara, Japan 2 Helsinki, University, Observatory 2 Haifa, University, Haifa, Israel 2 Gifu University, Kakamigahara 2 Gannon University, Erie, PA 2 Edinburgh, University, United Kingdom 2 Denison University, Granville, Ohio 2 Crete, University, Iraklion, Greece 2 Clarkson University, Potsdam, NY 2 California, University, Riverside, CA 2 California, University, Davis, CA 2 California, University, Davis and Livermore 2 California, University, Berkeley and Irvine 2 California, Saint Mary's College, Moraga 2 California University, Santa Cruz, Calif. 2 California State University, Northridge, CA 2 California State University, Long Beach, CA, US 2 California State University, Long Beach, CA 2 California State University, Fullerton, CA 2 California State University, Fullerton 2 Brown University, Providence, R.I. 2 Belgrade, University, Yugoslavia 2 Auckland, University, New Zealand 2 Auburn University, Auburn, AL 2 Arkansas, University, Little Rock, AR 2 Alaska, University, Anchorage 1 california, University, Berkeley, Calif. 1 York University, North York 1 Yonsei University, Seoul, Korea 1 Wyoming, University, Laramie, Wy 1 Wyoming University, Laramie, Wyo. 1 Wisconsin, University, Stevens Point 1 Wisconsin, University, Manitowoc, Wis. 1 Wisconsin, University, Kenosha, Wis. 1 Wisconsin, Univerity, Madison, WI 1 Western Ontario, University, London, CA 1 West Virginia University, Morgantown, WV 1 Washington, University, St. Louis, MO 1 Washington, University, Saint Louis, Mo 1 Washington, University, Saint Louis, MO 1 Washington University, Seattle, WA 1 Washburn University, Topeka, KS 1 Virginia University, Charlottesville, VA 1 Virginia University, Charlottesville 1 Virgina, University, Charlottesville, VA 1 Villanova, University, Villanova, PA 1 Vilanova University, Villanova, PA 1 Victoria, University, Australia 1 Victoria University, Canada 1 Vermont, Universtiy, Burlington 1 Vermont, University, Burlington, Vt. 1 Valpariso, University, IN 1 Valparaiso University, Valparaiso, IN, US 1 The University, Durham, UK 1 Texas, University, Dallas, TX 1 Texas Tech University, Lubbock, TX 1 Temple University, Philadelphia, PA 1 Tel Avive University, Tel Aviv, Israel 1 Teheran University, Teheran, Iran 1 Syracuse University, Syracuse, NY 1 Syracuse University, Syracuse, N.Y. 1 Stetson University, DeLand, FL 1 Stanford, University, Stanford, CA 1 Stanford, University, CA 1 Southern Colorado, University, Pueblo, CO 1 Southern California University, Tucson, AZ 1 South Carolina, University, Columbia, S.C. 1 Sevilla, Universidad, Seville 1 Santa Maria, Universidade Federal 1 Rijeka, University, Croatia 1 Ravishankar University, Raipur, India 1 Rajshahi University, Bangladesh 1 Puget Sound, University, Tacoma, WA 1 Princeton, University, Princeton, NJ 1 Princeton University, Princeton 1 Oxford, University, Oxford 1 Osmania University, Hyderabad 1 Oregon University, Eugene, OR 1 Old Dominion University, Norfolk, Va. 1 Oklahoma, University, Norman, Ok 1 Northern Iran, University, Babalsar, Iran 1 Northern Iowa, University, Cedar Falls, IA 1 Northern Colorado, University, Greely, CO 1 North Carolina, University, Greensboro, NC 1 North Carolina, University, Asheville, NC 1 North Alabama, University, Florence, AL 1 New York, University, New York, NY 1 New York, University, New York, N.Y. 1 New York University, New York 1 New Mexico University, Albuquerque, NM 1 Napoli, Universita, Naples 1 Missouri, University, Rolla, MO 1 Missouri, University, Columbia, Mo. 1 Minnesota, University, Minneapolis, Min. 1 Mew Mexico, University, Albuquerque 1 McDonald University, Austin, TX 1 Maryland, University, Collge Park 1 Maryland, University, College P 1 Maryland, University, Baltimore 1 Loyola University, Chicago, Ill. 1 Lowell, University, Lowell, Mass. 1 Louisiana, University, Lafayette, LA 1 Ljubljana, University, Yugoslavia 1 Lincoln University, Pennsylvania, US 1 Liege, Universite de l'Etat 1 Leicester, University, Leicester 1 Leicester University, Leicester, UK 1 Lawrence University, Appleton, WI 1 Lamar University, Beaumont, Tex. 1 L'Aquila, Universita, L'Aquila 1 Kutztown University, Kutztown, PA 1 Kobe Women's University, Kobe, Japan 1 Kenucky, University, Lexington, KY 1 Kentucky, University, Louisville, KY 1 Kentucky, University, Lexington, 1 Johns Hopkins University, Laurel, MD, US 1 Johns Hopkins University, Baltimore, MA 1 Jagiellonian University, Cracow, Poland 1 Indiana University, Bloomington, IL 1 Illinois, University, Urbana IL 1 Illinois, University, Chicago, Ill. 1 Illinois University, Urbana, IL 1 Helsinki University of Technology 1 Hawaii, University, Kula, HI 1 Hawaii, University, Kamuela, HI 1 Hawaii, University, Honolulu, MI 1 Hawaii, University, Honlulu 1 Hawaii, University, Hilo, HI 1 Goterborg, Universitet, Sweden 1 Georgia, University, Athens, Ga. 1 Georgia, University, Athens, GA 1 Fordham University, Bronx, NY 1 Florida, University, Gainsville 1 Florida, University, Gainesville, Fla 1 Florida, University, Alachua 1 Florida University, Gainesville 1 Emory University, Oxford, GA 1 Drew University, Madison, NJ 1 Denver University, Denver, Colo. 1 Delta College, University Center, MI 1 Delhi, University, New Delhi, India 1 Delft, Technical University, Netherlands 1 DePauw University, Greencastle, IN 1 Dalhousie University, Halifax 1 Cukurova University, Adana 1 Crete, University, Heraklion 1 Cornell University, Arecibo, P.R. 1 Cornel University, Ithaca, N.Y. 1 Copenhasen, University, Denmark 1 Copenhagen University Observatory 1 Connecticut, University, Storrs, Conn. 1 Columbia, University, New York, N.Y. 1 Columbia, University, New York 1 Columbia Unversity, New York 1 Columbia University, New York, N.Y 1 Colorado, University, Boulder, Co 1 Colorado University, Boulder 1 Cincinnati, University, Cininnati, OH 1 Cincinnati, University, Cincinnati, Ohio 1 Chicago, University, Illinois 1 Chicago, University, Chicago, Il 1 Chicago, University, Chicago 1 Catalunya, Universitat Politecnica 1 Case Western University, Cleveland, OH 1 California, Unversity, Livermore, CA 1 California, Unversity, Berkeley, CA 1 California, University, Santa Cruz and Livermore 1 California, University, Santa Barbara, and Berkeley, CA 1 California, University, Observatories, Santa Cruz 1 California, University, Los Angeles, Calif 1 California, University, Livermore and Los Angeles, CA 1 California, University, Livermore and Davis 1 California, University, Livermore and Berkeley, Calif. 1 California, University, Livermore and Berkeley, CA 1 California, University, Livermore and Berkeley 1 California, University, Lawrence, Calif. 1 California, University, La Jolla CA 1 California, University, Irvine and Berkeley 1 California, University, Davis and Livermore, CA 1 California, University, Davis and Berkeley, Calif. 1 California, University, Berkely, Calif. 1 California, University, Berkeley and Santa Barbara, CA 1 California, University, Berkeley and Los Angeles 1 California, University, Berkeley and Livermore, Calif. 1 California, University, Berkeley and Livermore, CA 1 California, University Los Angeles 1 California, Universita, La Jolla 1 California University, Santa Cruz 1 California University, Los Alamos, N. Mex. 1 California University, La Jolla, CA 1 California University, Berkeley 1 California Univ., Los Angeles, CA, US 1 California Univ. San Diego, La Jolla, CA, US 1 California State University, Los Angeles, Calif. 1 California State University, Los Angeles, CA 1 California State University, Long Beach, Calif. 1 California State Univ., Long Beach 1 Calabria, Universita, Italy 1 Calabria, Universita, Cosenza 1 Cagliari, Universita, Cagliari, Italy 1 Buenos Aires, University, Argentina 1 Bucknell University, Lewisburg, PA 1 Brown University, Providence, RI 1 Brandeis Universiy, Waltham, MA 1 Brandeis University, Waltham, MD 1 Bradford, University, England 1 Bologna University, Bologna, Italy 1 Bologna Universita, Italy 1 Birmingham, University, Birmingham 1 Baylor University, Waco, TX 1 Ball State University, Munice, IN, US 1 Arkansas, University, Little Rock, AK 1 Arizona, University. Tucson 1 Arizona, University, Tuscon, AZ 1 Arizona, University, Tuscon 1 Arizona University, Tucson, Ariz. 1 Ankara, University Observatory 1 Ankara University, Turkey 1 Alaska, University, Fairbanks, AK 1 Alabama, University, Birmingham, Ala. 1 Aberdeen, University, Scotland 120 19 Institute of Space and Astronautical Science, Sagamihara, Japan 63 Institute of Space and Astronautical Science, Sagamihara, Japan 24 Institute of Space and Astronautical Science, Kanagawa, Japan 23 Inst. of Space and Astronautical Science, Sagamihara, Japan 10 Inst. of Space and Astronautical Science, Kanagawa, Japan 6 The Institute of Space and Astronautical Science, Kanagawa, Japan 6 Institute of Space and Astronautical Science, Sagamihara, Kanagawa, Japan 5 Inst. of Space and Astronautical Science, Sagamihara, Kanagawa, Japan 4 Institute for Space and Astronautical Science, Sagamihara, Japan 3 Institute of Space and Astronautical Science, Sagamihara 2 Institute of Space and Astronomical Science, Sagamihara, Japan 2 Institute of Space and Astronautical Science, Tokyo, Japan 2 Inst. of Space and Astronautical Sciences, Japan 1 Institute of Space and Astronomical Science, Kanagawa, Japan 1 Institute of Space and Astronautical Sciences, Kanagawa, Japan 1 Institute of Space and Astronautical Science, Sagamihara 229, Japan 1 Institute of Space Astronautical Science, Sagamihara, Kanagawa, Japan 1 Institute for Space and Astronautical Science, Sagamihara, Kanagawa, Japan 1 Inst. of Space and Astronomical Science, Kanagawa, Japan 1 Inst. of Space and Astronautical science, Sagamihara, Kanagawa, Japan 121 15 Instituto de Radioastronomia Milimetrica, Granada, Spain 70 Instituto de Radioastronomia Milimetrica, Granada, Spain 17 Inst. de Radioastronomia Milimetrica, Granada, Spain 9 Instituto de Radioastronomia Milimetrica, Granada 5 Institut de Radioastronomie Millimetrique 3 Instituto de Astrofisica, Granada, Spain 3 Inst. de Radioastronomia Milimetrica, Granada 2 Instituto de Radioastronomia, Milimetrica, Granada, Spain 2 Instituto de Radioastronomia Millimetrica, Granada, Spain 2 Instituto de Radioastronmia del CNR, Bologna, Italy 2 Instituto de Astronomia y Geodesia, Madrid, Spain 2 Institut de Radio Astronomie Millimetrique, Granada, Spain 1 Instituto di Radioastronomia Milimetrica, Granada, Spain 1 Instituto de Radoiastronomia Milimetrica, Granada, Spain 1 Instituto de Radioastronomia, Villa Elisa, Argentina 1 Instituto de Radio Astronomia Milimetrica, Granada, Spain 122 7 Weizmann Institute of Science, Rehovot, Israel 129 Weizmann Institute of Science, Rehovot, Israel 4 Weizmann Inst. of Science, Rehovot, Israel 2 Weizmann Istitute of Science, Rehovot, Israel 1 Weizmann Institute, Rehovot, Israel 1 Weizmann Institute of Science Rehovot, Israel 1 Weizmann Inst., Rehovot, Israel 1 Racah Institute of Physics, Jerusalem, Israel 123 18 London, University College, Dorking, Surrey, England 119 London, University College, Dorking, Surrey, England 94 London, University College, Dorking, England 9 London, Univ. College, Dorking, United Kingdom 6 London Univ. College, Dorking, United Kingdom 5 London, University, Observatory, London, England 3 London, University, College, Dorking, Surrey, England 2 Royal Holloway College, Egham, Surrey, England 2 London, University College, Dorking, United Kingdom 2 London, University College, Dorking, Surrey 1 London, University, College, Dorking, England 1 London, University College, Surrey, England 1 London, University College, Holmbury St. Mary, Surrey, England 1 London, University College, Dorring, Surrey, England 1 London, University College, Dorking 1 London, Univeristy College, Dorking, Surrey, England 1 London University College, Dorking, England 1 London Univ. Coll., Dorking, United Kingdom 1 Dublin, University College, Dublin, Ireland 124 7 Observatorium Hoher List, Daun, West Germany 61 Observatorium Hoher List, Daun, West Germany 36 EXOSAT Observatory, Darmstadt, West Germany 20 Observatorium Hoher List, Daun, Federal Republic of Germany 6 Observatorium Hoher List, Daun, Germany 5 Observatorium Hoher List, Bonn, West Germany 2 Observatorium Lustbuehel, Graz, Austria 1 Observatorium Hoher List, Daum, West Germany 125 24 Universidad Nacional Autonoma de Mexico, Mexico City, Mexico 94 Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico 81 Universidad Nacional Autonoma de Mexico, Mexico City, Mexico 40 Universidad Nacional Autonoma de Mexico, Villa Obregon, Mexico 34 Universidad Nacional Autonoma de Mexico, Mexico City 30 Universidad Nacional Autonoma de Mexico, Ensenada, Mexico 13 Universidad Nacional Autonoma de Mexico, Alvaro Obregon, Mexico 8 Universidad Nacional Autonoma de Mexico, Coyoacan 7 Universidad Nacional Autonoma de Mexico, Mexico 7 Univ. Nacional Autonoma de Mexico, Mexico 4 Universidad Nacional Autonoma de Mexico, Ensenada 4 Universidad Nacional Autonoma de Mexico, Alvaro Obregon 2 Universidad Nacional Autonoma de Mexico, Coyacan, Mexico 2 Univ. Nacional Autonoma de Mexico, Mexico City, Mexico 1 Universidad National Autonoma de Mexico, D.F., Mexico 1 Universidad National Autonoma de Mexico, Coyoacan, Mexico 1 Universidad Nacional Autonoma de Mexico, Villa Obregon Mexico 1 Universidad Nacional Autonoma de Mexico, Obregon, Mexico 1 Universidad Nacional Autonoma de Mexico, Coyoatlan 1 Universidad Nacional Autonoma de Mexico, Cocoyacan, Mexico 1 Universidad Nacional Autonoma de Mexico Mexico City 1 Universidad Nacional Autonoma de Meico, Mexico City, Mexico 1 Univ. Nacional Autonoma de Mexico, Mexico, D.F., Mexico 1 Univ. Nacional Autonoma de Mexico, Apdo, Mexico 1 Mexico, Universidad Nacional Autonoma, Mexico City, Mexico 126 14 Zuerich, Eidgenoessische Technische Hochschule, Zurich, Switzerland 172 Zuerich, Eidgenoessische Technische Hochschule, Zurich, Switzerland 29 Eidgenoessische Technische Hochschule, Zurich, Switzerland 4 Eidgenoessische Technische Hochschule, Zuerich, Switzerland 3 Zurich, Eidgenossische Technische Hochschule, Zurich, Switzerland 3 Zuerich, Eidgenoessische Technische Hochschule, Zuerich, Switzerland 2 Zuerich, Eidgenossische Technische Hochschule, Zurich, Switzerland 2 Zuerich, Eidgenoessische Technische Hochschule, Zurich 2 Zuerich, Eidgenoessiche Technische Hochschule, Zurich, Switzerland 1 Zurich, Eidgenoessische Technische Hochschule, Zurich, Switzerland 1 Zuerich, Eidgenoessische Technische Hochschule, Zurich, Federal Republic of Germany 1 Zuerich, Eidgenoessische Technische Hochschule, Switzerland 1 Zuerich, Eidenoessische Technische Hochschule, Zurich, Switzerland 1 Zuerich Eidgenoessische Technische Hochchule, Zurich, Switzerland 1 Eidgenossische Technische Hochschule, Zurich, Switzerland 127 8 Koenigstuhl, Landessternwarte, Heidelberg, West Germany 84 Koenigstuhl, Landessternwarte, Heidelberg, West Germany 7 Landessternwarte, Heidelberg, West Germany 4 Konigstuhl, Landessternwarte, Heidelberg, West Germany 4 Koenigsstuhl, Landessternwarte, Heidelberg, West Germany 2 Koenigstuhl Landessternwarte, Heidelberg, West Germany 1 Koenigstuhl, Laudessternwarte, Heidelberg, West Germany 1 Koenigstuhl, Landesternwarte, Heidelberg, West Germany 1 Heidelberg, Landessternwarte, Koenigstuhl, West Germany 128 13 Akademiia Nauk SSSR, Institut Kosmicheskikh Issledovanii, Moscow, USSR 53 Akademiia Nauk SSSR, Institut Kosmicheskikh Issledovanii, Moscow, USSR 48 AN SSSR, Institut Kosmicheskikh Issledovanii, Moscow, USSR 16 Akademiia Nauk SSSR, Astronomicheskii Sovet, Moscow, USSR 15 Akademiia Nauk SSSR, Institut Prikladnoi Matematiki, Moscow, USSR 12 AN SSSR, Institut Iadernykh Issledovanii, Moscow, USSR 4 Akademiia Nauk SSSR, Institut Iadernykh Issledovanii, Moscow, USSR 1 Akademiia Nauk SSSR, Institut Radiotekhniki i Elektroniki, Moscow, USSR 1 Akademiia Nauk SSSR, Institut Prikladnoi Matemateki, Moscow, USSR 1 Akademiia Nauk SSSR, Institut Okeanologii, Moscow, USSR 1 Akademiia Nauk SSSR, Institut Fiziki Zemli, Moscow, USSR 1 Akademiia Nauk SSR, Astronomicheskii Sovet, Moscow, USSR 1 AN SSSR, Institut Kosmicheskykh Issledovanii, Moscow, USSR 1 AN SSSR Institut Kosmicheskikh Issledovanii, Moscow, USSR 129 12 Moskovskii Gosudarstvennyi Universitet, Moscow, USSR 65 Moskovskii Gosudarstvennyi Universitet, Moscow, USSR 3 Rostovskii Gosudarstvennyi Universitet, Rostov-on-Don, USSR 2 Leningradskii Gosudarstvennyi Universitet, Leningrad, USSR 2 Kievskii Gosudarstvennyi Universitet, Kiev, Ukrainian SSR 2 Erevanskii Gosudarstvennyi Universitet, Yerevan, Armenian SSR 1 Tartuskii Gosudarstvennyi Universitet 1 Moskovskii Gosudarstvennyi Universitet, Nauchny, Ukrainian SSR 1 Moskovskii Gosudarstvennyi Universitet, Moscow, Russia 1 Moskovskii Gosudarstvennyi Universitet, Moscow 1 Moskovskii Gosudarstvennyi Institut, Moscow, USSR 1 Kazanskii Gosudarstvennyi Universitet, Kazan, USSR 1 Gor'kovskii Gosudarstvennyi Universitet, Gorki, USSR 130 4 Imperial College of Science and Technology, London, England 110 Imperial College of Science and Technology, London, England 16 Imperial College of Science, Technology, and Medicine, London, England 2 Imperial College of Science, Technology, and Medicine, London 2 Imperial College of Science and Technology, London 131 7 University of Manchester Institute of Science and Technology, England 77 University of Manchester Institute of Science and Technology, England 33 University of Manchester Institute of Science and Technology, Manchester, England 12 Univ. of Manchester Inst. of Science and Technology, United Kingdom 1 University of Wales Institute of Science and Technology, Cardiff, Wales 1 University of Manchester, Institute of Science and Technology, Manchester, England 1 University of Manchester Institute of Science and Technology 1 Univ. of Manchester Inst. of Science and Technology 132 9 California Institute of Technology, Jet Propulsion Laboratory, Pasadena 214 California Institute of Technology, Jet Propulsion Laboratory, Pasadena 166 California Institute of Technology, Jet Propulsion Laboratory, Pasadena, CA 157 California Institute of Technology, Jet Propulsion Laboratory, Pasadena, Calif. 6 California Institute of Technology, Jet Propulsion Laboratory 1 California, Institute of Technology, Jet Propulsion Laboratory, Pasadena 1 California Institute of Technology, Jet Propulsion Laboratory, Pasadena, 1 California Institute of Technology, Jet Propulsion Laboratory Pasadena 1 California Institute of Technology Jet Propulsion Laboratory, Pasadena 1 California Institut of Technology, Jet Propulsion Laboratory, Pasadena, Calif. 133 18 Observatorio Interamericano de Cerro Tololo, La Serena, Chile 557 Observatorio Interamericano de Cerro Tololo, La Serena, Chile 8 Observatorio Interamericano de Cerro Tololo, La Serena 3 Observatorio Interamericano de Cerro-Tololo, La Serena, Chile 1 Obsevatorio Interamericano de Cerro Tololo, La Serena, Chile 1 Observatorio interamericano de Cerro Tololo, La Serena, Chile 1 Observatorio Intermericano de Cerro Tololo, La Serena, Chile 1 Observatorio Interamericano de Cerro, Tololo, La Serena, Chile 1 Observatorio Interamericano de Cerro Totolo, La Serena, Chile 1 Observatorio Interamericano de Cerro Tololo, la Serena, Chile 1 Observatorio Interamericano de Cerro Tololo, Tucson, Ariz. 1 Observatorio Interamericano de Cerro Tololo, Tucson, AZ 1 Observatorio Interamericano de Cerro Tololo, La Serene, Chile 1 Observatorio Interamericano de Cerro Tololo la Serena, Chile 1 Observatorio Interamericano de Cerro Telolo, La Serena, Chile 1 Observatorio Interamericano de Cerro Talolo, La Serena, Chile 1 Observatorio Interamericano de Cerra Tololo, La Serena, Chile 1 Observatorio Astronomico de Cerro Tololo, La Serena, Chile 1 Observatorio Astronomico de Cerro Tololo, La Serena 134 18 Cerro Tololo Inter-American Observatory, La Serena, Chile 135 Cerro Tololo Inter-American Observatory, La Serena, Chile 8 Cerro-Tololo Inter-American Observatory, La Serena, Chile 6 Cerro Tololo Interamerican Observatory, Casilla 603, La Serena, Chile 3 Cerro Tololo Interamerican Observatory, La Serena, Chile 3 Cerro Tololo Inter-American Observatory, Tucson, AZ 3 Cerro Tololo Inter-American Observatory, Casilla, La Serena, Chile 3 Cerro Tololo Inter-American Observatory, Casilla 603, La Serena, Chile 2 Cerro Tololo-American Observatory, La Serena, Chile 2 Cerro Tololo Inter-American Observatory, LaSerena, Chile 1 Cerro-Tololo Interamerican Observatory, La Serena, Chile 1 Cerro Tololo Interamericano Observatorio, La Serena, Chile 1 Cerro Tololo InterAmerican Observatory, La Serena, Chile 1 Cerro Tololo Inter. American Observ., La Serena, Chile 1 Cerro Tololo Inter-Americn Observatory, La Serena, Chile 1 Cerro Tololo Inter-American Observatory, Tucson, Ariz. 1 Cerro Tololo Inter-American Observatory, Tucson, AZ, US 1 Cerro Tollo Inter-American Observatory, La Serena, Chile 1 Cerre Tololo Inter-American Observatory, La Serena, Chile 135 21 Observatorio Astronomico Nacional, Guadalajara, Spain 72 Centro Astronomico de Yebes, Guadalajara, Spain 51 Observatorio Astronomico Nacional, Guadalajara, Spain 32 Observatorio Astronomico Nacional, Madrid, Spain 18 Observatorio Astronomico Nacional, Ensenada, Mexico 9 Observatorio Astronomico, Santiago de Compostela, Spain 9 Observatorio Astronomico Nacional, Santiago, Chile 9 Observatorio Astronomico Nacional, Guadalajara 7 Observatorio Astronomico Nacional 4 Observatorio Astronomico Nacional, Ensenada 4 Observatorio Astronomico Nacional, Bogota, Colombia 4 Instituto Geografico Nacional, Guadalajara, Spain 3 Observatorio Astronomico Nacional, San Ysidro, CA 3 Observatorio Astronomico Nacional, Cerro Calan, Chile 3 Centro Astronomico de Yebes (IGN), Guadalajara, Spain 2 Yebes, Centro Astronomico, Guadalajara, Spain 2 Observatorio Astronomico Nacional, Bogota, Columbia 1 Osservatorio Astronomico Nacional, Ensenada, Mexico 1 Observatorio Astrononomico Nacional, Guadalajara, Spain 1 Observatorio Astronomico Nacional, San Isidro, CA 1 Observatorie Astronomico Nacional, Guadalajara, Spain 1 Centro Astronomico de Yebes, Guadalahara, Spain 136 7 Cambridge Univ. Inst. of Astronomy, United Kingdom 149 Cambridge Univ. Inst. of Astronomy, United Kingdom 16 Cambridge University Institute of Astronomy, United Kingdom 7 Cardiff Univ. College, United Kingdom 6 Cambridge Univ., United Kingdom 5 Cambridge Univ. Inst. of Astronomy 3 Cambridge Univ. Inst. of Astronomy, Observatories, United Kingdom 2 Cambridge Univ., Observatories, United Kingdom 137 13 Belfast, Queen's University, Belfast, Northern Ireland 132 Belfast, Queen's University, Northern Ireland 68 Belfast, Queen's University, Belfast, Northern Ireland 10 The Queen's Univ. of Belfast, Belfast, Northern Ireland 5 Queen's University, Belfast, Northern Ireland 3 Queen's Univ. of Belfast, Belfast, Northern Ireland 2 The Queen's University of Belfast, Northern Ireland, UK 1 Ulster, New University, Coleraine, Northern Ireland 1 The Queens Univ. of Belfast, Belfast, Northern Ireland 1 Belfast, Queens's University, Northern Ireland 1 Belfast, Queens University, Northern Ireland 1 Belfast, Queens University, Belfast, Northern Ireland 1 Belfast, Queen's University, United Kingdom 1 Belfast Queen's University, Northern Ireland 138 25 Princeton University, New Observatory, Princeton, N.J. 282 Princeton University Observatory, NJ 201 Princeton University, New Observatory, Princeton, N.J. 114 Princeton University, New Observatory, Princeton, NJ 74 Princeton University, Princeton, N.J. 65 Princeton University, Princeton, NJ 58 Princeton Univ. Observatory, Princeton, NJ, US 27 Princeton University, Princeton, NJ, US 24 Princeton University Observatory, Princeton, NJ, US 16 Princeton University, New Observatory, NJ 4 Princeton, University, New Observatory, Princeton, N.J. 4 Princeton University, New Observatory, Princeton 4 Princeton University, New Observatory 4 Princeton University Observatory, Princeton, NJ 3 Princeton University, Observatory, NJ 2 Princeton University Observatory, Princeton, New Jersey, US 1 Princeton, University, New Observatory, Princeton, NJ 1 Princeton, New Observatory, Princeton 1 Princeton University, Observatory, Princeton, NJ 1 Princeton University, New Observatory, Princeton NJ 1 Princeton University, New Observatory, Observatory, Princeton, NJ 1 Princeton University, New Observatory Princeton, NJ 1 Princeton University Observatory, Princeton, NJ 08544, USA 1 Princeton University Observatory, Princeton, N.J. 1 Princeton University Observatory, Princeton NJ08540, USA 1 Princeton University New Observatory, Princeton, N.J. 139 39 Queen's University, Kingston, Ontario, Canada 274 Sussex, University, Brighton, England 96 Queen's University, Kingston, Ontario, Canada 46 Queen's University, Kingston, Canada 42 McMaster University, Hamilton, Ontario, Canada 32 Calgary, University, Calgary, Alberta, Canada 30 Waterloo, University, Waterloo, Ontario, Canada 20 York University, Downsview, Ontario, Canada 18 McMaster Univ., Hamilton, Ontario, Canada 10 Trent University, Peterborough, Canada 8 Queen's Univ., Kingston, Canada 7 Windsor, University, Windsor, Ontario, Canada 6 Toronto, University, Mississauga, Canada 4 Western Ontario, University, London, Ontario, Canada 4 Laurentian University, Sudbury, Ontario, Canada 4 Brandon University, Brandon, Manitoba, Canada 3 York University, North York, Ontario, Canada 3 Toronto, University, West Hill, Ontario, Canada 3 Sussex, University, Brighton, United Kingdom 3 Sussex University, Brighton, England 3 Queen's Univ., Ontario, Canada 2 Toronto, University, Richmond Hill, Ontario, Canada 2 The University of Calgary, Calgary, Canada 2 Queen's University, Kingston, Ontario 2 Queen's University at Kingston, Kingston, Ontario, Canada 2 Queen's Univ., Kingston, Ontario, Canada 2 Physics Department, Queen's University, Kingston, Ontario, Canada 2 McMaster University, Ontario, Canada 2 Athabasca University, Edmonton, Alberta, Canada 1 York, University, Downsview, Ontario, Canada 1 York University, Ontario, Canada 1 Western Ontario Univ., London, Ontario, Canada 1 Rice University, Houston, Texas, US 1 Queens's University, Kingston, Ontario, Canada 1 Queens University, Kingston, Ontario, Canada 1 Queens University, Kingston, Canada 1 Queens Univ., Ontario, Canada 1 McMaster University, Hamilton, Ontario, Canda 1 Kingston, Queen's University, Kingston, Ontario, Canada 1 Brandon Univ., Brandon, Ontario, Canada 140 32 Sterrewacht Sonnenborgh, Utrecht, Netherlands 73 Sterrewacht Sonnenborgh, Utrecht, Netherlands 28 Sterrewacht Leiden, Leiden, Netherlands 25 Utrecht State Univ., Netherlands 19 SRON, Utrecht, Netherlands 12 Lab. for Space Research, Utrecht, Netherlands 7 Sterrewacht Leiden, Leiden, The Netherlands 4 Utrecht University, Utrecht, Netherlands 4 Univ. of Utrecht, Utrecht, Netherlands 4 SRON-Utrecht, Utrecht, Netherlands 3 Utrecht Univ., Utrecht, Netherlands 3 Sterrwacht Leiden, Leiden, Netherlands 3 Sterrekundig Instituut, Utrecht, Netherlands 3 Sterrekundig Instituut Utrecht, Utrecht, Netherlands 2 Sterrewacht, Sonnenborgh, Utrecht, Netherlands 2 Sterrewacht Sonnenborgh, Utrecht 2 Sterrenwacht Sonnenborgh, Utrecht, Netherlands 2 Sterrenkundig Inst., Utrecht, Netherlands 2 SRON, Lab. for Space Research, Utrecht, Netherlands 2 Radiosterrewacht Westerbork, Zwiggelte, Netherlands 2 Astronomical Inst., Utrecht, Netherlands 1 Utrecht, Universiteit, Utrecht, Netherlands 1 Utrecht State University, Netherlands 1 Utrecht Rijksuniversiteit, Netherlands 1 Utrecht Observatory, Utrecht Netherlands 1 University of Utrecht, Utrecht, Netherlands 1 Sterrwacht Sonnenborgh, Utrecht, Nletherlands 1 Sterrewacht Leiden, Netherlands 1 Space Research Lab., Utrecht, Netherlands 1 SRON, Space Research Lab., Utrecht, Netherlands 1 Radiosterrenwacht Westerbork, Zwiggelte, Netherlands 1 Astrophysical Observatory, Utrecht, Netherlands 1 Astronomical Inst., Ultrecht, Netherlands 141 34 CNRS, Institut d'Astrophysique, Paris, France 444 CNRS, Institut d'Astrophysique, Paris, France 65 CNRS, Institut d'Astrophysique, Paris 63 CNRS, Inst. d'Astrophysique, Paris, France 23 Institut d'Astrophysique de Paris, Paris, France 11 Liege, Institut d'Astrophysique, Belgium 11 CNRS, Institut d'Astrophysique 11 CNRS, Inst. d'Astrophysique, Paris 7 Service d'Astrophysique, France 7 CNRS, Inst. d'Astrophysique 6 Inst. d'Astrophysique, Paris, France 5 Institut d'Astrophysique, Paris, France 4 Institut d'Astrophysique Spatiale CNRS, France 4 Inst. d'Astrophysique, Liege, Belgium 3 Service d' Astrophysique, Cedex, France 3 Institut d'Astrophysique Spatiale, Orsay, France 3 Inst. d'Astrophysique de Paris, Paris, France 3 Inst. d' Astrophysique de Paris, Paris, France 2 Institut d'Astrophysique, Liege, Belgium 2 CNR, Institut d'Astrophysique, Paris, France 1 Liege, Institut d'Astrophysique, Ougree, Belgium 1 Institut d'Astrophysique Spatiale, Orsay 1 Institut d' Astrophysique, Paris, France 1 Institut d' Astrophysique de Paris, Paris, France 1 Inst. d'Astrophysique Spatiale, Orsay 1 CNRS. Inst. d'Astrophysique, Paris, France 1 CNRS, Laboratoire d'Astrophysique, Paris 1 CNRS, Institute d'Astrophysique, Paris, France 1 CNRS, Institute d'Astrophysique, Paris 1 CNRS, Institut d'Astrophysique Spatiale, Orsay, France 1 CNRS, Institut d'Astrophysique Spatiale, Orsay 1 CNRS, Institut d'Astrophysics, Paris, France 1 CNRS, Inst. d'Astrophysique, Paris France 1 CNRS, Inst. d'Astrophysique, France 1 CNRS, Department d'Astrophysique Fondamentale 142 11 Observatoire Royal de Belgique, Brussels, Belgium 86 Observatoire Royal de Belgique, Brussels, Belgium 2 Observatoire Royal de Belgique, Uccle, Belgium 2 Institut d'Aeronomie Spatiale de Belgique, Brussels, Belgium 1 Vereniging voor Sterrenkunde, Brussels, Belgium 1 Universite Libre de Bruxelles, Brussels, Belgium 1 Observatoire, Royal de Belgique, Brussels, Belgium 1 Observatoire Royale de Belgique, Brussels, Belgium 1 Observatoire Royal, Brussels, Belgium 1 Observatoire Royal de Belgique, Bruxelles, Belgium 1 Observatoire Royal de Belgique, Brussels 1 Observatoire Royal de Belgique, Brussells, Belgium 143 25 Space Telescope Science Inst., Baltimore, MD 865 Space Telescope Science Institute, Baltimore, MD 255 Space Telescope Science Inst., Baltimore, MD 186 Space Telescope Science Institute, Baltimore, MD, US 165 Space Telescope Science Inst., Baltimore, MD, US 34 Space Telescope Science Institute 8 Space Telescope Science Institute, Baltimore, Maryland, US 7 Space Telescope Institute, Baltimore, MD, US 6 Space Telescope Science Institute, Baltimore 5 Space Telescope Science Inst., Baltimore 4 Space Telescope Science Inst., Baltimore,, MD, US 3 Space Telescope Science Institute, Batimore, MD, US 3 Space Telescope Science Inst., Baltimore, MD, Us 3 Space Telescope Institute, Baltimore, Maryland, US 2 Space Telescopic Science Institute, Baltimore, Maryland, US 2 Space Telescope Institute, Baltimore, MD 1 Space Telescope and Science Institute, Baltimore, MD, US 1 Space Telescope Space Institute, Baltimore, MD 1 Space Telescope Scientific Institute, Baltimore, MD, US 1 Space Telescope Science Institute, Baltimore. MD 1 Space Telescope Science Institute, Baltimore, MD 21218, USA 1 Space Telescope Science Institute, Balitmore, MD, US 1 Space Telescope Science Inst., MD, US 1 Space Telescope Science Inst. 1 Space Telescope Inst., Baltimore, MD, US 1 Computer Science Corp., Baltimore, MD 144 20 Canada-France-Hawaii Telescope Corp., Kamuela, HI 145 Canada-France-Hawaii Telescope Corp., Kamuela, HI 15 Canada-France-Hawaii-Telescope Corp., Kamuela, HI 11 Canada-France-Hawaii Telescope Corp., Kamuela 5 Canada-France-Hawaii Telescope Corp., Waimea, HI 4 Canada-France-Hawaii Telescope Corporation, Kamuela, HI, US 4 Canada-France-Hawaii Telescope Corp., Hilo, HI 2 Canada-France-Hawaii Telescope Corp., Kamuela, HI, US 2 Canada-France-Hawaii Telescope Corp., HI, US 2 Canada-France-Hawaii Corp., Kamuela, HI 2 Canada, France, Hawaii Telescope Corp., Kamuela, HI 1 Telescope Canada-France-Hawaii Corp., Kamuela, HI 1 Canadian-French-Hawaiian Telescope Corp., Kamuela, HI 1 Canada-France-Hawaii, Telescope Corp., Kamuela, HI 1 Canada-France-Hawaii Telescope, US 1 Canada-France-Hawaii Telescope, Kamuela, HI, US 1 Canada-France-Hawaii Telescope, Kamuela, HI 1 Canada-France-Hawaii Telescope Corp., Kamulea, Hawaii 1 Canada-France-Hawaii Telescope Corp., Kamuela, Hawaii, US 1 Canada-France-Hawaii Telescope Corp., Kammela, HI 1 Canada-France-Hawaii Telescope Corp. 145 44 Liege, Universite, Cointe-Ougree, Belgium 212 Chicago, University, Chicago, Ill. 174 Liege, Universite, Cointe-Ougree, Belgium 135 Leicester, University, Leicester, England 35 Bruxelles, Universite Libre, Brussels, Belgium 26 Liege, Universite, Liege, Belgium 24 Nice, Universite, Nice, France 21 Liege, Universite de l'Etat, Cointe-Ougree, Belgium 15 Liege, Universite, Belgium 12 Liege, Universite de l'Etat, Belgium 11 Universite de Liege, Liege, Belgium 11 Liege, Universite, Cointe-Ougree 6 Leicester University, Leicester, England 5 Mons, Universite de l'Etat, Belgium 5 Liege, Institut d'Astrophysique, Cointe-Ougree, Belgium 5 Copenhagen, University, Copenhagen, Denmark 4 Mons, Universite de l'Etat, Mons, Belgium 4 Liege, Universite, Ougree, Belgium 4 Liege, Universite, Cointe-Sclessin, Belgium 4 Liege, Universite de l'Etat, Ougree, Belgium 4 Katholieke Universiteit Leuven, Heverlee, Belgium 3 Vrije Universiteit Brussel, Brussels, Belgium 3 Universiteit Leuven, Heverlee, Belgium 3 Liege, Inst. d'Astrophysique, Belgium 3 Kiel, Universitaet, Kiel, West Germany 2 Universiteit Gent, Gent, Belgium 2 Oslo, University, Blindern, Norway 2 Mons, Universite d'Etat, Mons, Belgium 2 Liege, Universite, Cointe Ougree, Belgium 2 Leicester, University, United Kingdom 2 Essex, University, Colchester, England 2 Bruxelles, UniversiteLibre, Brussels, Belgium 1 Universite de Liego, Liege, Belgium 1 London, University College, England 1 Liege, Universitede l'Etat, Ougree, Belgium 1 Liege, Universitede l'Etat, Cointe-Ougree, Belgium 1 Liege, Universitede L'Etat, Cointe-Ougree, Belgium 1 Liege, Universite, Ougree-Liege, Belgium 1 Liege, Universite, Cointe-Ourgree, Belgium 1 Liege, Universite, Cointe-Oueree, Belgium 1 Liege, Universite, Cointe-Dugree, Belgium 1 Liege, Universite de l'Etat, Cointe-Ougree, Bel 1 Keele, University, United Kingdom 1 Institut d'Astrophysique, Cointe-Ougree, Belgium 1 Chicago, University, Chigago, Ill. 146 15 Sacramento Peak Observatory, Sunspot, N. Mex. 62 Sacramento Peak Observatory, Sunspot, N. Mex. 57 Sacramento Peak Observatory, Sunspot, NM 43 National Solar Observatory, Sunspot, NM 7 Radio Astronomy Observatory, Austin, Tex. 5 National Solar Observatory, Sunspot, NM, US 3 Sacramento Peak National Observatory, Sunspot, NM 2 Sacramento Peak Observatory, Tucson, AZ 2 N.S.O./Sacramento Peak Observatory, Sunspot, NM, US 2 Cloudcroft Observatory, Cloudcroft, N. Mex. 1 Shenandoah Observatory, Southport, CT 1 Sacramento Peak Observatory, Sunspot, M. Mex. 1 Sacramento Peak National Observatory, Sunspot, N. Mex. 1 Millimeter Wave Observatory, Austin, Tex. 1 Corralitos Observatory, Las Cruces, N. Mex. 1 Apache Point Observatory, Sunspot 147 9 NASA. Marshall Space Flight Center, Huntsville, AL, US 175 NASA, Marshall Space Flight Center, Huntsville, AL 111 NASA. Marshall Space Flight Center, Huntsville, AL, US 26 NASA, Marshall Space Flight Center, Huntsville, Ala. 8 NASA, Marshall Space Flight Center 5 NASA/Marshall Space Flight Center, Huntsville, AL, US 4 NASA. Marshall Space Flitht Center, Huntsville, AL, US 4 NASA, Marshall Space Flight Center, Huntsville 1 NASA. Marshall Space Flight Center, Huntsville, AL, S 1 NASA Marshall Space Flight Center, Huntsville, AL, US 148 36 NASA, Goddard Space Flight Center, Greenbelt, MD 1299 NASA, Goddard Space Flight Center, Greenbelt, MD 680 NASA. Goddard Space Flight Center, Greenbelt, MD, US 175 NASA, Goddard Space Flight Center, Greenbelt, Md. 82 NASA, Goddard Space Flight Center 73 NASA, Goddard Space Flight Center, Greenbelt 14 NASA/Goddard Space Flight Center, Greenbelt, MD, US 13 NASA Goddard Space Flight Center, Greenbelt, Maryland, US 9 NASA. Goddard Space Flight Center, Greebelt, MD, US 4 NASA/Goddard Space Center, Greenbelt, MD, US 3 NASA/Goddard Space Flight Center, Greenbelt, Maryland, US 3 NASA. Goddard Space Flight Center, New York, NY, US 3 NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA 3 Goddard Space Flight Center, Greenbelt, MD, US 2 NASA/Goddard Space Flight Center, Greenbelt, Maryland, 20771 2 NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA 2 NASA, Goddard Space Flight Center, Tucson, AZ 1 NASA. Goddard Space Flight Center, Noordwijk, Netherlands 1 NASA. Goddard Flight Center, Greenbelt, MD, US 1 NASA, Goddard Space Research Center, Greenbelt, MD 1 NASA, Goddard Space Flight Center, Moffett Field, CA 1 NASA, Goddard Space Flight Center, Greennbelt, MD 1 NASA, Goddard Space Flight Center, Greenbelt, Md 1 NASA, Goddard Space Flight Center, Greenbelt, MA 1 NASA, Goddard Space Flight Center, Greebelt 1 NASA, Goddard Space Flight Center, Goddard, MD 1 NASA, Goddard Space Flight Center Operations Facility, Greenbelt, MD 1 NASA, Goddad Space Flight Center, Greenbelt 1 NASA Goddard Space Flight Center, Greenbelt, MD, US 1 NASA Goddard Space Flight Center, Greenbelt, MD 1 IUE Observatory, NASA. Goddard Space Flight Center, Greenbelt, MD, US 1 Goddard Space Flight Center, Greenbelt, Maryland, US 1 Goddard Space Flight Center, Greenbelt, MD 20771, USA 1 Goddard Space Flight Center, Green Belt, MD 20771, USA 1 Compton Science Support Center, Greenbelt, MD 1 Code 681, Goddard Spaceflight Center, Greenbelt, MD 20771, USA 1 Code 660.2, NASA/Goddard Space Flight Center, Greenbelt, MD, USA 149 29 NASA, Ames Research Center, Moffett Field, CA 324 NASA, Ames Research Center, Moffett Field, CA 82 NASA, Ames Research Center, Moffett Field 59 NASA. Ames Research Center, Moffett Field, CA, US 52 NASA, Ames Research Center, Moffett Field, Calif. 24 NASA, Ames Research Center, Space Science Div., Moffett Field, CA 20 NASA. Ames Research Center, Moffet Field, CA, US 15 NASA, Ames Research Center 13 NASA, Ames Research Center, Space Sciences Div., Moffett Field, CA 11 IBM Almaden Research Center, San Jose, CA 10 NASA, Langley Research Center, Hampton, Va. 5 NASA, Langley Research Center, Hampton, VA 5 NASA Ames Research Center, Moffett Field, California, US 4 SETI Institute, Moffett Field, CA 3 NASA, Ames Research Center, Mountain View, CA 2 NASA/Ames Research Center, Moffet Field, CA, US 2 NASA. Langley Research Center, Hampton, VA, US 2 NASA Ames Research Center, Moffett Field, CA, US 1 Sterling Software, Moffett Field, CA 1 Sterling Software, Inc., Moffett Field, CA 1 NASA. Ames Research Center, Moffit Field, CA, US 1 NASA, Lewis Research Center, Cleveland, Ohio 1 NASA, Ames Research Center, Space Projects Div., Moffett Field, CA 1 NASA, Ames Research Center, Moffet Field, CA 1 NASA, Ames Research Center Space Sciences Div., Moffett Field, CA 1 NASA Ames Research Center, Moffett Field, CA 1 NASA Ames Research Center, Moffet Field, CA, US 1 Informatics General Corp., Moffett Field, CA 1 Fairchild Research Center, Palo Alto, CA 1 Eloret Institute, Moffett Field, CA 150 25 Joint Astronomy Centre, Hilo, HI 84 Joint Astronomy Center, Hilo, HI 74 Joint Astronomy Centre, Hilo, HI 27 Joint Astronomy Centre, Hilo, HI, US 21 ESA, Astronomy Div., Madrid, Spain 7 Inst. for Astronomy, Honolulu, HI, US 6 Radio Astronomy Observatory 6 Joint Astronomy Center, Hilo, HI, US 3 U.K. Infrared Telescope, Hilo, HI 3 Radio Astronomy Centre, Ootacamund, India 2 Saint Mary's Univ., Halifax 2 Radio Astronomy Centre, Udhagamandalam 2 Korea Astronomy Observatory, Korea 1 U.K. Telescopes, Joint Astronomy Center, Hilo, HI 1 Solar Astronomy, Pasadena, CA, US 1 Saint Lawrence Univ., Canton, NY 1 Potchefstroom, University 1 Norwegian Space Centre, Oslo, Norway 1 NOAA, Aeronomy Laboratory 1 Mauna Kea Observatory, Hilo, HI 1 Korea Astronomy Observatory 1 Joint Astronomy Centre, Hilo, Hawaii 1 Joint Astrnomy Center, Hilo, HI 1 Infrared Telescope Unit, Hilo, HI 1 Flight Control Center, Moscow, USSR 1 Beijing Astronomical Observatory