ClusMetric - distortion 1.27125e+06 1 10 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 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 9 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, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette 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 4 6 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 & Astronomy, University College London, London WC1E 6BT 1 Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK 5 2 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 6 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 7 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 8 15 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 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 2 Service d'Astrophyique, Gif-sur-Yvette, France 2 CEN, Service d'Astrophysique, 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 9 15 Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ, UK 48 Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ, UK 23 Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ 11 Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, UK 5 Royal Greenwich Observatory, Madingley Road, Cambridge CB30EZ 2 The Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ 2 Royal Greenwich Observatory, Madingley Road, Cambridge CB9 0EZ, UK 2 Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ, CB3 0EZ 2 Royal Greenwich Observatory, Madingley Rd, Cambridge, CB3 0EZ, UK 2 MRAO, Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, UK 1 The Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ, UK 1 The Observatories, Madingley Road, Cambridge CB3 0HA, UK 1 Royal Greenwich Observatory, Madingley Road, Cambridge OB3 0EZ 1 Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EX, UK 1 Royal Greenwich Observatory, Madingley Rd, Cambridge, CB3 0EZ 1 Royal Greenwich Observatory, Madingley Rd, Cambridge CB3 0EZ 10 9 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK 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, UK 4 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, CB3 0HA 3 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA y 2 Institute of Astronomy, The Observatories, Cambridge CB3 0HA, UK 2 Institute of Astronomy, Cambridge University, Cambridge CB3 0HA, UK 1 Institute of Astronomy, Madingley Road, nCambridge CB3 0HA 1 Institute of Astronomy, Madingley Rd, Cambridge CB3 0HA 11 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 12 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 13 15 Lawrence Livermore National Laboratory, Livermore, CA 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 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 14 56 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 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 12 Max-Planck-Institut fuer Radioastronomie, Bonn 11 Max Planck Institut fuer Radioastronomie, Bonn, Germany 7 Max-Planck-Institut fur Radioastronomie, Bonn, 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 Astronomie, Koenigstuhl, West Germany 4 Max-Planck-Inst. fuer Radioastronomie, Germany 4 Max Planck Inst. fuer Radioastronomie, Bonn, Germany 3 Max-Planck Insitituit fuer Astronomie, Heidelberg, Germany 2 Max-Planck-Institut fur Radioastronomie, D-53010 Bonn, 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 Astronomie, Heidelburg, Germany 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 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 Meteorologie, Hamburg, West Germany 1 Max-Planck-Institut fuer Chemie, Mainz, West 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, 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 15 13 Joint Institute for Laboratory Astrophysics, Boulder, CO 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 16 13 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 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 Brookhaven, National Laboratory, Upton, NY 17 6 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 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 18 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 19 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 20 20 Virginia, University, Charlottesville, VA 164 Virginia, University, Charlottesville 69 Florida, University, Gainesville, Fla. 61 Florida, University, Gainesville, FL 60 Virginia, University, Charlottesville, Va. 60 Virginia, University, Charlottesville, VA 51 Virginia Univ., Charlottesville 38 Univ. of Virginia, Charlottesville, VA, US 16 Vanderbilt University, Nashville, TN 12 Alabama, University, Huntsville, Ala. 12 Alabama, University, Huntsville, AL 8 Arkansas, University, Fayetteville 4 Virginia Univ., Charlottesville, VA, US 4 Arkansas, University, Fayetteville, AR 2 Miami, University, Coral Gables, FL 1 Virginia University, Charlottesville, VA 1 Virginia University, Charlottesville 1 Virginia Univ., Charlottesville, VA 1 Virgina, University, Charlottesville, VA 1 Univ. of Virgina, Charlottesville, VA, US 1 Florida University, Gainesville 21 30 Minnesota, University, Minneapolis, Minn. 221 Montreal, Universite, Montreal, Canada 182 Minnesota, University, Minneapolis 85 Michigan, University, Ann Arbor, Mich. 84 Minnesota, University, Minneapolis, Minn. 58 Univ. of Minnesota, Minneapolis, MN, US 35 Minnesota Univ., Minneapolis 31 University of Minnesota, Minneapolis, MN, US 12 Washington University, St. Louis, Mo. 12 Cincinnati, University, Cincinnati, OH 8 Tufts University, Medford, Mass. 8 Minnesota Univ., Minneapolis, MN, US 5 Missouri, University, St. Louis, MO 4 Maryland, University, Greenbelt, Md. 4 Butler University, Indianapolis, IN 3 Tennessee, University, Knoxville, Tenn. 3 Miyazaki University, Miyazaki, Japan 2 Wesleyan University, Middletown, Conn. 2 Montana, University, Missoula, MT 1 Wisconsin, University, Manitowoc, Wis. 1 Wesleyan Univeristy, Middletown, Conn. 1 Washington, University, Saint Louis, Mo 1 Washington, University, Saint Louis, MO 1 Univ. of Minnesota, Minneaplois, MN, US 1 Montreal Universite, Montreal, Canada 1 Minnesota, University, Minneapolis, Min. 1 Minnesota University, Minneapolis, Minn. 1 Kansas State University, Manhattan, Kan. 1 Connecticut, University, Storrs, Conn. 1 Cincinnati, University, Cininnati, OH 1 Cincinnati, University, Cincinnati, Ohio 22 12 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, Northern Ireland 23 10 British Columbia, University, Vancouver, Canada 230 British Columbia, University, Vancouver, Canada 193 Western Ontario, University, London, Canada 24 British Columbia Univ., Vancouver, Canada 4 British Columbia University, Vancouver, Canada 3 British Columbia, University, Victoria, Canada 3 British Columbia Univ., Vancouver 2 Victoria, University, Victoria, Canada 2 British Columbia, University, Vancouver 2 British Columbia Univ., Vancouver, BC, Canada 1 British Columbia, Vancouver, Canada 24 6 Cambridge Univ. Inst. of Astronomy, United Kingdom 149 Cambridge Univ. Inst. of Astronomy, United Kingdom 16 Cambridge University Institute of Astronomy, 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 25 27 Pennsylvania State University, University Park 150 Pennsylvania State University, University Park 59 Pennsylvania State University, University Park, PA 50 Pennsylvania, University, Philadelphia 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 22 Pennsylvania State University, University Park, PA, US 22 Alabama, University, University, Ala. 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 2 The Pennsylvania State Univ., University Park, PA, US 2 Pennsylvania State University, Dunmore, Pa. 1 Pennsylvannia State Univ., University Park, PA, US 1 Pennsylvania, University, University Park 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, State College 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 26 34 Louisiana State University, Baton Rouge, LA 53 Michigan State University, East Lansing 45 Louisiana State University, Baton Rouge, LA 29 Louisiana State University, Baton Rouge, La. 21 Montana State University, Bozeman 21 Michigan State University, East Lansing, MI 11 Louisiana State University Observatory, Baton Rouge, LA 11 Louisiana State Univ., Baton Rouge, LA, US 10 San Diego State University, San Diego, CA 10 Louisiana State University Observatory, Baton Rouge 8 San Diego State University, San Diego, CA, US 8 Louisiana State University, Baton Rouge, LA, US 4 Louisiana State University, Observatory, Baton Rouge, La. 3 Sonoma State University, Rohnert Park, CA 3 Louisiana State University Observatory, Baton Rouge, La. 3 Appalachian State University, Boone, N.C. 2 Montana State University, Bozeman, Montana, US 2 Louisiana State University, Observatory, Baton Rouge, LA 2 Leiden, State University, Netherlands 2 Iowa State University, Ames, Iowa, US 2 Colorado State University, Ft. Collins, CO 2 California State University, Northridge, CA 2 California State University, Long Beach, CA 2 California State University, Fullerton, CA 1 South Dakota State University, Brookings, SD, US 1 San Jose State University, San Jose, CA 1 Montana State University, Bozeman, Mont. 1 Montana State University, Bozeman, MT, US 1 Michigan State University, Lansing, Mich. 1 Louisiana, University, Lafayette, LA 1 Louisiana State University, Observatory, Baton Rouge 1 Louisiana State Univ. Observatory, Baton Rouge 1 Louisana State University Observatory, Baton Rouge 1 California State University, Los Angeles, CA 1 California State University, Los Angeles 27 21 Amsterdam, Universiteit, Amsterdam, Netherlands 159 Amsterdam, Universiteit, Netherlands 153 Amsterdam, Universiteit, Amsterdam, Netherlands 26 Amsterdam, University, Netherlands 24 Univ. of Amsterdam, Amsterdam, Netherlands 14 University of Amsterdam, Amsterdam, Netherlands 11 Amsterdam, Universiteit, Amsterdam 7 Vrije Universiteit, Amsterdam, Netherlands 7 Free University, Amsterdam, Netherlands 6 Amsterdam, Vrije Universiteit, Amsterdam, Netherlands 4 Amsterdam, Vrije Universiteit, Netherlands 3 Astronomical Institute, Amsterdam, Netherlands 1 Utrecht, Universiteit, Utrecht, Netherlands 1 Nijmegen, Universiteit, Nijmegen, Netherlands 1 Fokker Aerospace, Amsterdam, Netherlands 1 Amsterdam, University, Amsterdam, Netherlands 1 Amsterdam, Universitiet, Amsterdam, Netherlands 1 Amsterdam, Universitet, Amsterdam, Netherlands 1 Amsterdam, Universiteit, Haarlem, Netherlands 1 Amsterdam, Universieit, Netherlands 1 Amsterdam Universiteit, Amsterdam, Netherlands 1 Amsterdam Univ., Amsterdam, Netherlands 28 36 European Southern Observatory, Garching, West Germany 457 European Southern Observatory, Garching, West Germany 338 European Southern Observatory, Garching, Federal Republic of 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 8 European Southern Observatory, Munchen, Germany 6 European Southern Observatory, Munich, West Germany 4 European Southern Observatory, La Serena, Chile 4 European Southern Observatory, Hamburg, West Germany 4 European Southern Observatory, Germany 3 European Southern Obsevatory, Garching, Germany 3 European Southern Observatory, La Silla 2 European Southern Observatory, Santiago 2 European Southern Observatory, Garching 2 European Southern Observatory, Casilla, Chile 2 European Southern Observatory, 85748 Garching bei Munchen, Germany 2 European Southern Observatory Garching, West Germany 1 Exosat Observatory, Darmstadt, West Germany 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, Geneva 1 European Southern Observatory, Garcing, West Germany 1 European Southern Observatory, Garching, Muenchen, Germany 1 European Southern Observatory, Garching, Germany, 1 European Southern Observatory, Garching bei Muenchen, West Germany 1 European Southern Observatory, Gar 1 European Southern Observatory, D-85748 Garching bei Munchen, Germany 1 European Southern Observatory, D-85748 Garching b. Munchen, Germany 1 European Southern Observatoroy, Garching, West Germany 1 Eueopean Southern Observatory, Geneva, Switzerland 29 15 Carnegie Institution of Washington, Washington, DC 110 Carnegie Institution of Washington, Washington, DC 28 Carnegie Institution of Washington, Washington, D.C. 11 Carnegie Institution of Washington, Washington 9 Carnegie Institution of Washington, DC 8 Carnegie Institution of Washington, Pasadena, CA, US 6 Carnegie Institution of Washington, Washington, DC, US 6 Carnegie Institute of Washington, Pasadena, CA, US 5 Carnegie Inst. of Washington, Washington, DC, US 4 Carnegie Inst. of Washington, Pasadena, CA, US 2 Carnegie Institute of Washington, Washington, DC, US 1 Carnegie, Institution of Washington, Washington, DC 1 Carnegie Instution of Washington, La Serena, Chile 1 Carnegie Institution of Washington, Washingon, DC, US 1 Carnegie Institution of Washington, Pasadena, CA 1 Carnegie Institute of Washington, Washingotn, DC, US 30 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 31 25 Observatoire Midi-Pyrenees, Toulouse, France 137 Observatoire Midi-Pyrenees, Toulouse, France 61 Observatoire de Paris, Meudon, France 25 Observatoire Astronomique, Strasbourg, France 20 Observatoire de Meudon, Meudon, France 10 Observatoire de Grenoble, Grenoble, France 9 Observatoire de Paris, Paris, France 8 Observatoire de Besancon, Besancon, 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 Observatorie de Besancon, Besancon, France 3 Observatoire de Lyon, France 3 Observatoire Midi-Pyrenees 2 Observatorie de Meudon, Meudon, France 2 Observatoire de Midi-Pyrenees, Toulouse, France 1 Observatorie de Grenoble, Grenoble, France 1 Observatoire de Paris,, Meudon, 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 32 17 Bell Telephone Laboratories, Inc., Holmdel, NJ 66 AT&T Bell Laboratories, Holmdel, NJ 44 Bell Telephone Laboratories, Inc., Holmdel, 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 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, Holmdel, NJ 33 20 Naval Research Lab., Washington, DC, US 94 Naval Research Laboratory, Washington, DC, US 87 Naval Research Lab., Washington, DC, US 39 U.S. Naval Observatory, Washington, DC, US 9 Naval Research Laboratory, Washignton, DC, US 5 U.S. Naval Research Lab., Washington, DC, US 4 US Naval Research Laboratory, Washington, DC, US 3 Univ. Space Research Association, Washington, DC, US 3 Catholic Univ., Washington, DC, US 2 US Naval Observatory, Washington, DC, US 2 US Naval Observatory, Washignton, DC, US 2 Naval Research Lab., US 2 NASA Headquaters, Washington, DC, US 1 Pangaro, Inc., Washington, DC 1 Pangaro Inc., Washington, DC 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 Aura, Inc., Washington, DC 34 132 University College, London, England 450 University College, London, England 302 Queen Mary College, London, England 126 University College, Cardiff, Wales 94 London, University College, Dorking, England 53 University of Texas, Austin, TX, US 35 Universite Laval, Quebec, Canada 31 University College, Dublin, Ireland 25 Univ. College, London, United Kingdom 23 Keele, University, Keele, Staffs., England 19 University of Hong Kong, Hong Kong 13 University of Nigeria, Nsukka 12 Univ. College London, London, UK 11 University College, Campbell, Australia 11 Universita di Bologna, Bologna, Italy 9 University of Toledo, Toledo, OH, US 9 University College London, London, UK 9 Universitat Wien, Wien, Austria 7 University of Padova, Padova, Italy 7 University College, Galway, Ireland 7 University College, Dublin, Republic of Ireland 7 Universita di Roma, Rome, Italy 7 Universita di Roma, Roma, Italy 6 University of Turku, Piikkio, Finland 6 University of London, London, UK 5 University of Nigeria, Nsukka, Nigeria 5 University of Nebraska, Lincoln, NE, US 5 University of Moscow, Moscow, Russia 5 Queen Mary College, London 5 London, University, Observatory, London, England 5 Keble College, Oxford, England 4 University of Helsinki, Finland 4 University College, London 4 University College, Canberra, Australia 4 University Coll., London, UK 4 Universitat Muenchen, Muenchen, Germany 4 Univ. College London, Surrey, UK 4 St. John's College, Cambridge, England 4 Queen Elizabeth College, London, England 4 King's College, Edmonton, Canada 4 Goldsmiths' College, London, England 3 University of Potsdam, Potsdam, Germany 3 University of Iceland, Reykjavik 3 University of Helsinki, Helsinki, Finland 3 University of Crete, Heraklion, Greece 3 University of Bern, Bern, Switzerland 3 University College London, London, England, UK 3 Universitat Tubingen, Tubingen, Germany 3 Univ. College, Dublin, Ireland 3 Univ. College London, Holmbury, UK 3 Connecticut College, New London, CT, US 2 Westfield College, London, England 2 University of Oslo, Oslo, Norway 2 University of Leeds, Leeds, UK 2 University College, Dublin 2 University College, Cork, Ireland 2 University College, Belfield, Dublin, Ireland 2 University College of London, London, UK 2 University College London, Holmbury, UK 2 University College 2 Universiteit Gent, Gent, Belgium 2 Universitat-GH Siegen, Siegen, Germany 2 Universitaei Wien, Wien, Austria 2 Univeristy of Texas, Austin, TX, US 2 Racal Avionics, Ltd., London, England 2 Open University, Milton Keynes, England 2 London, University College, Dorking, Surrey 2 Liverpool Polytechnic, England 2 Imperial College, London, England, UK 1 York, University, Heslington, Yorks., England 1 University, College, London, England 1 University of Wales, Wales, UK 1 University of Wales, Cardiff 1 University of Texas, Ausrin, TX, US 1 University of Szczecin, Szczecin, Poland 1 University of Sydney, Australia 1 University of Puerto Rico, Cayey 1 University of Pisa, Pisa, Italy 1 University of Oregon, Eugene, OR, US 1 University of Milano, Milano, Italy 1 University of Maine, Orono, ME, US 1 University of Leiden, Leiden, Netherlands 1 University of Durham, Durham, England, UK 1 University of Durham, Durham, England, GB 1 University of Copenhagen, Tollose, Denmark 1 University of Cambridge, Cambridge, England 1 University of Bahrain, Bahrain 1 University of Alberta, Edmonton, Canada 1 University Colllege, Cardiff, Wales 1 University College, Oxford, England 1 University College, Galway 1 University College, Cardiff, Walles 1 University College of Wales, Cardiff 1 University College of London, Holmbury, UK 1 University College London, England 1 UniversiteLaval, Quebec, Canada 1 Universite de Liego, Liege, Belgium 1 Universite Paris, Orsay, France 1 Universite Paris 9, Orsay, France 1 Universite Paris 7, Meudon, France 1 Universite Laval, Quebec,Canada 1 Universitat Wein, Wein, Austria 1 Universita di Trieste, Munchen, Germany 1 Universita de Roma, Rome, Italy 1 Universita Padova, Padova, Italy 1 Universita Firenze, Firenze, Italy 1 Univ. of College London, London, UK 1 Univ. College, London, England 1 Univ. College London, London, England, UK 1 State University College, Geneseo, NY 1 St. Patrick's College, Manooth, Ireland 1 St. Hilda's College, Oxford, England 1 South London College, London, England 1 Salford University, Salford, Lancs., England 1 Royal Observatory, London, England 1 Napier College, Edinburgh, Scotland 1 Magdalen College, Oxford, England 1 London, University, College, Dorking, England 1 London, University College, Surrey, England 1 London, University College, Dorking 1 London University College, Dorking, England 1 London College, London, England 1 Logica, Ltd., London, England 1 King's College, London, England 1 King's College, Cambridge, England 1 Hull, University, Hull, Yorks., England 1 Fanshawe College, London, Canada 1 Erindale, College, Toronto, Canada 1 Dulwich College, London, England 1 Dublin, University College, Dublin, Ireland 1 Connecticut College, New London, Conn. 1 Benedictine College, Atchison, Kan. 1 Beloit College, Beloit, WI, US 35 14 Joint Astronomy Center, Hilo, HI 84 Joint Astronomy Center, Hilo, HI 74 Joint Astronomy Centre, Hilo, HI 27 Joint Astronomy Centre, Hilo, HI, US 6 Joint Astronomy Center, Hilo, HI, US 2 Solar Astronomy, Pasadena, CA US, 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 Mauna Kea Observatory, Hilo, HI 1 Joint Astronomy Centre, Hilo, Hawaii 1 Joint Astronomy Centre, 1 Joint Astrnomy Center, Hilo, HI 1 Flight Control Center, Moscow, USSR 36 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 37 33 Queen's University, Kingston, Ontario, Canada 96 Queen's University, Kingston, Ontario, Canada 60 York University, Toronto, Canada 46 Queen's University, Kingston, Canada 42 McMaster University, Hamilton, Ontario, Canada 30 Waterloo, University, Waterloo, Ontario, Canada 20 York University, Downsview, Ontario, Canada 18 McMaster Univ., Hamilton, Ontario, Canada 8 Queen's Univ., Kingston, Canada 7 Windsor, University, Windsor, Ontario, 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 Queen's Univ., Ontario, Canada 2 York Univ., Toronto, Ontario, Canada 2 Toronto, University, Richmond Hill, Ontario, Canada 2 Toronto University, Toronto, 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 Athabasca University, Edmonton, Alberta, Canada 1 York, University, Downsview, Ontario, Canada 1 York University, Ontario, Canada 1 University of Toronto, Ontario, Canada 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 38 91 University of California, Santa Cruz, CA, US 229 Univ. of California, Berkeley, CA, US 122 University of California, Berkeley, CA, US 122 University of Arizona, Tucson, AZ, US 103 Univ. of California, Santa Cruz, CA, US 64 University of Colorado, Boulder, CO, US 37 University of Hawaii, Honolulu, HI, US 36 University of California, Santa Cruz, CA, US 34 University of Wisconsin, Madison, WI, US 29 Univ. of California, Los Angeles, CA, US 26 Univ. of California, San Diego, CA, US 23 University of Washington, Seattle, WA, US 21 University of Virginia, Charlottesville, VA, US 21 University of Michigan, Ann Arbor, MI, US 21 University of Illinois, Urbana, IL, US 21 University of Chicago, Chicago, IL, US 20 University of California at Berkeley, Berkeley, CA, US 19 University of California, San Diego, La Jolla, CA, US 18 University of Delaware, Newark, DE, US 16 University of California, Los Angeles, CA, US 14 Univ. of California, Santa Barbara, CA, US 13 University of California, Berkeley, California, US 12 University of Pittsburgh, Pittsburgh, PA, US 12 University of Oklahoma, Norman, OK, US 12 University of Kansas, Lawrence, KS, US 11 University of California, Santa Barbara, CA, US 11 University of Alabama, Tuscaloosa, AL, US 10 University of Utah, Salt Lake City, UT, US 10 University of Florida, Gainesville, FL, US 10 University of California at San Diego, La Jolla, CA, US 10 Univ. of California, Riverside, CA, US 9 Univ. of California, La Jolla, CA, US 8 University of Georgia, Athens, GA, US 8 Univ. of California at Santa Cruz, Santa Cruz, CA, US 7 University of California, Santa Cruz, California, US 6 University of Wyoming, Laramie, WY, US 6 University of Illinois, Urbana, Illinois, US 5 University of California, Berkeley, Berkeley, CA, US 4 University of California, San Diego, CA, US 4 University of California, Irvine, California, US 4 University of Arizona, Tuscon, Arizona, US 4 University of Alabama, Huntsville, AL, US 4 Univ. of California, Livermore, CA, US 4 Univ. of Calif., Santa Cruz, CA, US 4 Univ. of Calif., Santa Barbara, CA, US 4 Univ of California, Berkeley, CA, US 4 Lick Observatory, California Univ., Santa Cruz, CA, US 3 Unviersity of Illinois, Urbana, Illinois, US 3 University of Cantabria, Cantabria, Spain 2 Unviersity of Arizona, Tucson, Arizona, US 2 Universtiy of California, Santa Cruz, California, US 2 University of Villanova, Villanova, PA, US 2 University of Vermont, Burlington, VT, US 2 University of Nevada, Las Vegas, NV, US 2 University of Iowa, Iowa City, IA, US 2 University of Deleware, Newark, DE, US 2 University of California, Los Angeles, California, US 2 University of California, Irvine, CA, US 2 University of Arkansas, Little Rock, AR, US 2 University of Arizona, Tucson, Arizona, US 2 Univeristy of California, Berkeley, California, US 2 Univ. of Calilfornia, Berkeley, CA, US 2 Univ. of California, Santa Cruz, Santa Cruz, CA, US 2 Univ. of California, Irvine, CA, US 2 Lick Observatory, University of California, Santa Cruz, CA, US 2 Lick Observatory, Santa Cruz, CA, US 2 California Univ., Santa Cruz, CA, US 1 Unviersity of Iowa, Iowa City, IA, US 1 Unviersity of California, Berkeley, California, US 1 University of Virginia, Virginia, US 1 University of Victoria, Victoria, Canada 1 University of Stanford, Stanford, CA, US 1 University of South Florida, Tampa, FL, US 1 University of Michigan, Ann Arbor, MI, UK 1 University of Illinois, Urbans, IL, US 1 University of Cincinnati, Cincinnati, OH, US 1 University of Catania, Catania, Italy 1 University of California, Santa Cruz, Santa Cruz, CA, US 1 University of California, Livermore, California, US 1 University of California at Santa Cruz, Santa Cruz, CA, US 1 University of California at Irvine, Irvine, CA, US 1 University of California at Davis, Davis, CA, US 1 University of Califonia, Berkeley, CA, US 1 University of Calgary, Calgary, Canada 1 University of Arizona, Tuscon, AZ, US 1 University of Alabama, Tucaloosa, AL, US 1 Univeristy of Colorado, Boulder, CO, US 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 39 19 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 5 NASA, Langley Research Center, Hampton, VA 5 NASA Ames Research Center, Moffett Field, California, US 3 NASA, Ames Research Center, Mountain View, CA 2 NASA/Ames Research Center, Moffet Field, CA, US 2 NASA Ames Research Center, Moffett Field, CA, US 1 NASA. Ames Research Center, Moffit Field, CA, US 1 NASA, Lewis Research Center, Cleveland, Ohio 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 40 20 Brussel, Vrije Universiteit, Brussels, Belgium 133 Brussel, Vrije Universiteit, Brussels, Belgium 35 Bruxelles, Universite Libre, Brussels, Belgium 33 Leuven, Katholieke Universiteit, Heverlee, Belgium 25 Leuven, Katholieke Universiteit, Louvain, Belgium 9 Brussel, Vrije Universiteit, Brussels 8 Bruxelles, Univ. Libre, Brussels, Belgium 8 Brussel, Vrije Univ., Brussels, Belgium 5 Leuven, Katholieke Universiteit, Leuven, Belgium 3 Vrije Universiteit Brussel, Brussels, Belgium 2 Bruxelles, UniversiteLibre, Brussels, Belgium 2 Brussel Vrije Universiteit, Brussels, Belgium 1 Vrije Universiteit, Brussels, Belgium 1 Leuven, Katholieve Universiteit, Louvain, Belgium 1 Brussels, Free University, Brussels, 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 41 34 Royal Greenwich Observatory, Cambridge, England 257 Royal Greenwich Observatory, Herstmonceux, Sussex, England 166 Royal Greenwich Observatory, Herstmonceux, England 82 Royal Greenwich Observatory, Cambridge, England 71 Royal Greenwich Observatory, Cambridge, United Kingdom 42 Royal Greenwich Observatory, Cambridge, UK 17 Royal Greenwich Observatory, Hailsham, Sussex, England 9 Royal Greenwich Observatory, Herstmonceux, Sussex 7 Royal Greenwich Observatory, Hailsham, England 5 Royal Greenwich Observatory, Herstmonceux 4 Royal Greenwich Observatory, Tenerife, Spain 4 Royal Greenwich Observatory, Hertsmonceux, Sussex, England 4 Royal Greenwich Observatory, Herstmonceaux, Sussex, England 3 Royal Greenwich Observatory, Cambridge, England, UK 3 Royal Greenwich Observatory, Cambridge 2 Royal Greenwich Observatory, Hertmonceux, Sussex, England 2 Royal Greenwich Observatory, Hailsham, Sussex 1 Royal Observatory, Edinburgh, England 1 Royal Observatory, Edinburg, England 1 Royal Greenwich Observatory, United Kingdom 1 Royal Greenwich Observatory, Santa Cruz, Spain 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 Greenwich Observatory, England, UK 1 Royal Greenwich Observatory, Cambridge, MA 1 Royal Greenwich Observatory, Cambridge, England, GB 1 Royal Greenwhich Observatory, England 1 Royal Greenich Observatory, Cambridge, UK 1 Royal Greeenwich Observatory, Herstmonceux, England 1 Astronomy Observatory, Cambridge, England 42 8 Massachusetts Inst. of Technology, Cambridge, MA, US 47 Massachusetts Institute of Technology, Cambridge, MA, US 32 Massachusetts Inst. of Technology, Cambridge, MA, US 29 Massachusetts Inst. of Tech., Cambridge, MA, US 5 Massachusetts Institute of Technology, Cambridge, Massachusetts, US 2 Massachusetts Institute of Technology, Westford, MA, US 1 Massachusetts Institute of Technology, 37-627, Cambridge, MA 02139, USA 1 Massachusetts Inst.of Technology, Cambridge, MA, US 1 Massachusetts Insitute of Technology, Cambridge, MA, US 43 19 Princeton Univ. Observatory, Princeton, NJ, US 201 Princeton University, New Observatory, Princeton, N.J. 114 Princeton University, New Observatory, Princeton, NJ 72 Princeton Univ., Princeton, NJ, US 58 Princeton Univ. Observatory, Princeton, NJ, US 24 Princeton University Observatory, Princeton, NJ, US 6 Princeton University, Princeton, New Jersey, US 5 Princeton Univ. Observatory, Peyton Hall, NJ, US 4 Princeton, University, New Observatory, Princeton, N.J. 4 Princeton University Observatory, Princeton, NJ 2 Princeton University Observatory, Princeton, New Jersey, US 1 Yale Univ. Observatory, New Haven, CT, US 1 Turku Univ. Observatory, Gainesville, FL, US 1 Princeton, University, New Observatory, Princeton, NJ 1 Princeton, New Observatory, Princeton 1 Princeton University, Observatory, Princeton, NJ 1 Princeton University Observatory, Princeton, NJ 08544, USA 1 Princeton University Observatory, Princeton NJ08540, USA 1 Princeton University New Observatory, Princeton, N.J. 1 Fairborn Observatory, Tucson, AZ, US 44 42 Dominion Astrophysical Observatory, Victoria, Canada 373 Dominion Astrophysical Observatory, Victoria, Canada 257 Dominion Astrophysical Observatory, Victoria, British Columbia, Canada 117 Tokyo Astronomical Observatory, Mitaka, Japan 112 National Astronomical Observatory, Mitaka, Japan 63 Dominion Radio Astrophysical Observatory, Penticton, Canada 20 Dominion Astrophysical Observatory, Victoria, BC, Canada 13 Rothney Astrophysical Observatory, Calgary, Canada 11 Crimean Astrophysical Observatory, Nauchny, Ukraine 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 5 Dominion Astrophysical Observatory, Victoria 5 Climenhaga Observatory, Victoria, Canada 4 Rothney Astrophysical Observatory, Calgary, Alberta 3 Dominion Astrophysical Observatory, Penticton, British Columbia, Canada 3 Arcetri Astrophysical Observatory, Firenze, Italy 2 Special Astrophysical Observatory, Pulkovo, Russia 2 Domonion Astrophysical Observatory, Victoria, B.C., Canada 2 Dominion Astrophysical Observatory, NRCC, Victoria, Canada 2 Astrophysical Observatory, Catania, Italy 1 Tokyo Astronmical Observatory, Mitaka, Japan 1 Tartu Astrophysical Observatory, Tartumaa, 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 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 45 18 Anglo-Australian Observatory, Epping, New South Wales, Australia 259 Anglo-Australian Observatory, Epping, New South Wales, Australia 200 Anglo-Australian Observatory, Epping, 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 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, 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, 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 46 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. 47 9 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 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 1 Sacramento Peak Observatory, Sunspot, M. Mex. 1 Sacramento Peak National Observatory, Sunspot, N. Mex. 48 28 National Optical Astronomy Observatories, Tucson, AZ 90 National Optical Astronomy Observatories, Tucson, AZ 54 National Radio Astronomy Observatory, Tucson, AZ 31 National Optical Astronomy Observatories, Tucson, AZ, US 22 National Optical Astronomy Observatories, La Serena, Chile 12 National Radio Astronomy Observatory, Tucson, Ariz. 9 National Optical Astronomical Observatories, Tucson, AZ 8 National Radio Astronomy Observatory, Soccoro, NM 7 National Radio Astronomy Observatory, Socorro 6 National Radio Astronomy Observatory, Tucson, AZ, US 5 National Optical Astronomy Observatory, Tucson, AZ 4 National Optical Astronomy Observatory, Tucson, AZ, US 3 National Optical Observatories, Tucson, AZ, US 3 National Optical Astronomy Observatories, Tucson, Arizona, US 2 National Optical Astronomical Observatory, Tucson, AZ 2 National Optical Astronomical Observatories, Tucson, AZ, US 1 National Solar Observatories, Tucson, AZ 1 National Radio Atronomy Observatory, Tucson, AZ, US 1 National Radio Astronomy Observatory, Tucscon, Ariz. 1 National Optical Observatories, Tucson, AZ 1 National Optical Astronomy Observatories, Sunspot, NM, US 1 National Optical Astronomy Observatories, Pasadena, CA 1 National Optical Astronomical Observatories, Tucson, AZ 85726- 6732 USA 1 National Optical Astronomical Observatories, La Serena, Chile 1 National Optical Astornomy Observatories, Tucson 1 National Opitical Astronomy Observatories, Tucson, AZ, US 1 National Opitcal Astronomical Observatories, La Serena, Chile 1 National Opical Astronomy Observatories, La Serena, Chile 1 Nat. Optical Astronomical Observatories, Tucson, AZ, US 49 49 Kitt Peak National Observatory, Tucson, AZ 898 Steward Observatory, Tucson, AZ 801 Kitt Peak National Observatory, Tucson, AZ 282 Kitt Peak National Observatory, Tucson, Ariz. 230 Steward Observatory, Tucson, Ariz. 92 National Solar Observatory, Tucson, AZ 39 Big Bear Solar Observatory, Pasadena, CA 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 8 Athens, National Observatory, Athens, Greece 6 Steward Observatory, Tucson, AZ, US 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 Mount Hopkins Observatory, Amado, AZ 3 Korea Astronomy Observatory, Taejon, Korea 2 Steward Observatory, Tuscon, AZ, US 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 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 National Radio Observatory, Tucson, AZ, US 1 National Observatory, Greece 1 Michigan-Dartmouth-MIT Observatory, Tucson, AZ 1 McGraw-Hill Observatory, Tucson, Ariz. 1 Lunar and Planetary Observatory, Tucson, AZ 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 Kitt Peak National Laboratory, Tucson, AZ 1 F. L. Whipple Observatory, Tucson, AZ 1 Big Bear Solar Observatory, Pasadena 1 Athens, National Observatory 1 Athens National Observatory, Greece 50 19 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 5 IBM Research Laboratory, San Jose, CA 4 Lockheed Solar Observatory, Palo Alto, Calif. 4 Lockheed Research Laboratory, Palo Alto, CA 3 Molecular Research Inst., Palo Alto, CA 2 Lockheed Space Sciences Laboratory, Palo Alto, CA 2 Lockheed Solar Observatory, Palo Alto, CA 2 Lockheed Missiles and Space Co., 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 1 GM Research Laboratories, Warren, MI 1 Fairchild Research Center, Palo Alto, CA 51 16 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 2 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 52 11 NASA, Goddard Institute for Space Studies, New York 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 53 7 Cambridge University Institute of Astronomy, England 163 Cambridge University Institute of Astronomy, England 24 Cambridge University, Observatories, England 18 Cambridge, University, Observatories, England 4 Cambridge University Institute of Astronomy, Observatories, England 3 Cambridge University Institute of Astronomy 1 Cambridge University Observatories, England 1 Cambridge University Institute of Astromomy, England 54 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 55 33 University Observatory, St. Andrews, Scotland 545 Royal Observatory, Edinburgh, Scotland 78 University Observatory, St. Andrews, Scotland 69 Yale University Observatory, New Haven, Conn. 29 University Observatory, Copenhagen, Denmark 24 St. Andrews, University, St. Andrews, Scotland 17 University Observatory, Glasgow, Scotland 15 University Observatory, Saint Andrews, Scotland 10 Turku University Observatory, Turku, Finland 5 University Observatory, Oxford, England 5 St. Andrews, University, Observatory, St. Andrews, Scotland 5 Glasgow, University, Observatory, Glasgow, Scotland 3 University of St. Andrews, St. Andrews, Scotland 3 University Observatory, Tollose, Denmark 3 University Observatory, Istanbul, Turkey 3 University Observatory Munich, Munchen, Germany 3 Glasgow University Observatory, Glasgow, Scotland 2 University of St. Andrews, Fife, UK 2 University Observatory, Glasgow, Scotland, UK 2 Turku University Observatory, Tuorla, Finland 2 The University, St. Andrews, Scotland 1 University, Observatory, St. Andrews, Scotland 1 University, Observatory, Saint Andrews, Scotland 1 University, Observatory, Copenhagen, Denmark 1 University of St. Andrews, Fife, Scotland 1 University Observtory, St. Andrews, Scotland 1 University Observatory, Warsaw, Poland 1 University Observatory, St. Andrews, England 1 Univ. of St. Andrews, St. Andrews, Scotland 1 St. Andrews, University Observatory, St. Andrews, Scotland 1 St. Andrews University, St. Andrews, Scotland 1 St. Andrews University Observatory, St. Andrews, Scotland 1 Royal Observatory, Edingburgh, Scotland 1 Armagh Observatory, University Observatory, St. Andrews, Scotland 56 37 California Institute of Technology, Pasadena, Calif. 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 6 Georgia Institute of Technology, Atlanta 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 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, 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 1 Stevens Institute of Technology, Hoboken, N.J. 1 New York Institute of Technology, Central Islip 1 NASA/IPAC, California Institute of Technology, Pasadena, CA, US 1 Kanazawa Institute of Technology, Nonaichi, Japan 1 Chiba Institute of Technology, Narashino, 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 Tech, Pasadena, CA, US 1 California Insitute of Technology, Pasadena, CA, US 57 29 Applied Research Corp., Landover, MD 102 Applied Research Corp., Landover, MD 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 12 Mission Research Corp., Albuquerque, NM 9 Applied Research Corp., Greenbelt, MD 6 Applied Research Corp., Landover, MD, US 4 Applied Research, Inc., Huntsville, AL 3 SM Systems and Research Corp., Landover, MD 2 Mission Research Corp., Santa Barbara, CA 2 Applied Research Corp., Greenbelt, MD, US 2 Applied Research Corp. 1 Western Research Co., Tucson, AZ 1 SM Systems and Research Corp., Lantham, MD 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 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 58 120 Dartmouth College, Hanover, NH 92 Dartmouth College, Hanover, NH 22 Swarthmore College, PA 22 City College, New York, N.Y. 19 Smith College, Northampton, MA 18 Middlebury College, VT 17 Dartmouth College, Hanover, NH, US 16 Union College, Schenectady, NY 16 Haverford College, PA 15 Lafayette College, Easton, PA 12 Dartmouth College, Hanover, N.H. 12 Carleton College, Northfield, MN 9 Wellesley College, MA 9 Bentley College, Waltham, MA 8 Wheaton College, Norton, MA 8 Vassar College, Poughkeepsie, NY 8 Swarthmore College, Swarthmore, PA 8 Claremont Colleges, CA 8 Amherst College, Amherst, Mass. 7 Middlebury College, Middlebury, Vt. 6 Swarthmore College, Swarthmore, Pa. 6 Haverford College, Haverford, Pa. 6 Harvey Mudd College, Claremont, CA 6 Gettysburg College, PA 6 Colby College, Waterville, ME 6 City College, New York 5 Weber State College, Ogden, UT 5 Scarborough College, Toronto, Canada 5 Rhodes College, Memphis, TN, US 5 Haverford College, Haverford, PA 5 Hampshire College, Amherst, Mass. 5 Emmanuel College, Boston, MA 5 City College, New York, NY 5 Benedictine College, Atchison, KS 4 Wellesley College, Wellesley, MA 4 Swarthmore College, Swarthmore, PA, US 3 Scarborough College, West Hill 3 Scarborough College 3 Saint Mary's College, Moraga, CA 3 Rhodes College, Memphis, TN 3 Queen Mary College, London, UK 3 Middlebury College, Middlebury, VT 3 Lafayette College, Easton, PA, US 3 Kenyon College, Gambier, OH 3 Imperial College, London, UK 3 Grinnell College, IA 3 Erindale College, Toronto, Canada 3 Citrus College, Azusa, CA 3 Centre College, Danville, KY 3 Agnes Scott College, Decatur, GA 2 Scarborough College, Westhill 2 Saint John's College, Annapolis 2 Rider College, Lawrenceville, NJ 2 Regis College, Weston, MA 2 Meerut College, India 2 Ithaca College, NY 2 Haverford College, Haverford, PA, US 2 Grinnell College, Grinnell, IA 2 Eastern College, Saint Davids, PA 2 Dickenson College, Carlisle, PA, US 2 Canisius College, Buffalo, NY 2 Barnard College, New York 2 Amherst College, MA 2 Alma College, Alma, MI, US 2 Albion College, MI 1 Wooster, College, OH 1 Whitman College, Walla Walla, WA 1 West Georgia College, Carrollton, GA 1 Weber State College, Ogden, Utah 1 Valdosta State College, Valdosta, Ga. 1 Tsuda College, Kodaira, Japan 1 Trenton State College, Trenton, NJ 1 Trenton State College, Trengton, NJ 1 Swarthmore College Observatory, PA 1 St. Norbert College, De Pere, WI 1 St. John's College, Annapolis, MD 1 St. John's College, Annapolis 1 Spelman College, Atlanta, GA 1 Siena College, Loudonville, NY 1 San Juan College, Farmington, NM 1 Saint Norbert College, De Pere, WI 1 Rollins College, Winter Park, FL 1 Rider College, Lawrenceburg, NJ 1 Rhodes College, Parkway, TN, US 1 Pomona College, Claremont, CA 1 Oberlin College, Oberlin, Ohio 1 Oberlin College, OH 1 North Georgia College, Dahlonega, Ga. 1 North Georgia College, Dahlonega, GA 1 Middlebury, College, Middlebury, VT 1 Manhattan College, Bronx, NY 1 Manhattan College, Bronx, N.Y. 1 Macon College, GA 1 Lynchburg College, VA 1 Loras College, Dubuque, IA, US 1 Livingstone College, Salisbury, NC 1 Livingstone College, Salisbury 1 Lambuth College, Jackson, TN 1 Ithaca College, Ithaca, NY 1 Hunter College, New York, N.Y. 1 Hope College, Holland, MI, US 1 Hollins College, Roanoke, VA 1 Harvey Mudd College, Claremont 1 Hampshire College, Amherst, MA 1 Gettysburg College Gettysburg, PA 1 Emmanuel College, Boston 1 Dickinson College, Carlisle, PA 1 Dartmouth College, Hannover, N.H. 1 Claremont College, Claremont 1 Charleston, College, SC 1 Cardiff, College, Wales 1 Calvin College, Grand Rapids, MI 1 Cabrillo College, Aptos, CA 1 Boston College, Newton, MA, US 1 Boston College, Newton, MA 1 Boston College, MA 1 Bates College, Lewiston, ME 1 Barnard College, New York, NY 1 Amherst College, Amherst, MA 1 American College, Madurai, India 1 Alma College, MI 59 54 Univ. of Maryland, College Park, MD, US 147 Univ. of Arizona, Tucson, AZ, US 89 Univ. of Maryland, College Park, MD, US 86 Univ. of Colorado, Boulder, CO, US 68 Univ. of Hawaii, Honolulu, HI, US 54 Univ. of Michigan, Ann Arbor, MI, US 46 Univ. of Washington, Seattle, WA, US 46 Univ. of Chicago, Chicago, IL, US 40 Univ. of Illinois, Urbana, IL, US 36 Univ. of Massachusetts, Amherst, MA, US 26 University of Maryland, College Park, MD, US 25 Univ. of Delaware, Newark, DE, US 25 Univ. of Alabama, Tuscaloosa, AL, US 21 Univ. of Oklahoma, Norman, OK, US 19 Univ. of Rochester, Rochester, NY, US 16 Univ. of Florida, Gainesville, FL, US 14 Univ. of Kansas, Lawrence, KS, US 14 Univ. of Iowa, Iowa City, IA, US 14 Univ. of Calif., Berkeley, CA, US 11 Univ. of Toledo, Toledo, OH, US 10 Univ. of Utah, Salt Lake City, UT, US 8 University of Maryland, College Park, Maryland, US 8 Univ. of Georgia, Athens, GA, US 8 Maryland Univ., College Park, MD, US 6 Univ. of Oregon, Eugene, OR, US 6 Univ. of Chicago, Williams Bay, WI, US 6 Univ. of Arizona, Tucson, Arizona, US 5 Univ. of Wyoming, Laramie, WY, US 5 Univ. of Pennsylvania, Philadelphia, PA, US 4 Univ. of Milano, Milano, Italy 4 Univ. of Mass., Amherst, MA, US 3 Univ. of Notre Dame, Notre Dame, IN, US 3 Univ. of Massachussets, Amherst, MA, US 3 Univ. of Coloradio, Boulder, CO, US 3 Univ. of Colorada, Boulder, CO, US 3 Univ. of Calif., Irvine, CA, US 2 Univ. of Maine, Orono, ME, US 2 Univ. of Illinios, Urbana, IL, US 2 Univ. of Hawaii, Hilo, HI, US 2 Univ. of Chicago, Chicago, Il, US 1 niv. of Michigan, Ann Arbor, MI, US 1 Univ.of Hawaii, Honolulu, HI, US 1 Univ. of Washington, Settle, WA, US 1 Univ. of Wales, College Cardiff, Cardiff, UK 1 Univ. of Virginia, Charlottesvill, VA, US 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 Massachusetts, Amhurst, MA, US 1 Univ. of Maryland, University Park, MD, US 1 Univ. of Kansas, Lawrence, Kansas, US 1 Univ. of Iowa, Iowa, IA, US 1 Univ. of Hawaii, Honolulu, HA, US 1 Univ. of Chicago, Willams Bay, WI, US 1 Univ. of Arizon, Tucson, AZ, US 60 13 U.S. Navy, Naval Research Laboratory, Washington, DC 105 U.S. Navy, Naval Research Laboratory, Washington, DC 69 U.S. Naval Observatory, Washington, DC 41 U.S. Navy, Naval Research Laboratory, Washington, D.C. 26 U.S. Navy, Naval Research Lab., Washington 26 U.S. Naval Observatory, Washington, D.C. 3 U.S. Navy, Naval Observatory, Washington, DC 1 U.S. Navy, Navel Research Laboratory, Washington, DC 1 U.S. Navy, Naval Research Laboratory, Washington 1 U.S. Navy, Naval Research Center, Washington, DC 1 U.S. Navy, Naval Resarch Laboratory, Washington, D.C. 1 U.S. Navy, Naval Ordnance Laboratory, Silver Spring 1 U. S. Navy, Naval Research Laboratory, Washington, DC 1 U. S. Naval Observatory, Washington, DC 61 81 Cambridge University, Cambridge, England 635 Cambridge University, Cambridge, England 226 Oxford University, Oxford, England 133 Colorado, University, Boulder, Colo. 115 Durham, University, Durham, England 62 Harvard University, Cambridge, MA 55 Cambridge University, Observatories, Cambridge, England 51 Kent, University, Canterbury, England 48 Birmingham, University, Birmingham, England 35 Catania, Universita, Catania, Italy 33 Harvard University, Cambridge, Mass. 29 Wyoming, University, Laramie, WY 29 Cardiff, University College, Wales 22 Hokkaido University, Sapporo, Japan 20 Sheffield, University, Sheffield, England 19 Wyoming, University, Laramie, Wyo. 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 Calabria, Universita, Rende, Italy 5 Helsinki, University, Helsinki, Finland 5 Aarhus, University, Aarhus, Denmark 4 York, University, Heslington, England 4 Kansas, University, Lawrence, Kan. 4 Jadavpur University, Calcutta, India 4 Hawaii, University, Maui, Hawaii 3 Waterloo, University, Waterloo, Ontario 3 Vanderbilt University, Nashville, Tenn. 3 Sussex University, Brighton, England 3 London, University, New Cross, England 3 Colorado University, Boulder, Colo. 3 Cambridge University, The Observatories, Cambridge, England 3 Cambridge University, Cambridge 3 Calgary, University, Calgary, Canada 2 Vanerbilt University, Nashville, TN, US 2 Turku, University, Turku, Finland 2 Reading, University, Reading, Berks., England 2 Purdue University, Lafayette, Ind. 2 Iwate University, Morioka, Japan 2 Institute of Astronomy, Cambridge, England 2 Haifa, University, Haifa, Israel 2 Essex, University, Colchester, England 2 Durham University, Durham, England 2 Cardiff, University College, England 2 Cairo University, Giza, Egypt 2 Aberdeen, University, Aberdeen, Scotland 1 Wyoming, University, Laramie, Wy 1 Wyoming University, Laramie, Wyo. 1 Waterloo, University, Waterloo, Canada 1 Warsaw, University, Bialystock, Poland 1 Warsaw Univesity, Warsaw, Poland 1 Turku, University, Tuorla, Finland 1 Turku, University, Piikkio, Finland 1 Surrey, University, Guildford, England 1 Silesia, University, Katowice, Poland 1 Oxford, University, Oxford, England 1 Oxford University Oxford, England 1 Nottingham University, Nottingham, England 1 Nanjing University, Nanjing, China 1 London, University College, England 1 Liverpool, University, Liverpool, England 1 Kumaon University, Nainital, India 1 Hokkaido University, Sappora, Japan 1 Hokaido University, Sapporo, Japan 1 Galway, University, Republic of Ireland 1 Florida, University, Gainesville, Fla 1 Ehime University, Matsuyama, Japan 1 Durham, University, Durham, Leics., England 1 Catania University, Catania, Italy 1 Cambridge University, Observatories, Cambridge 1 Cambridge University, Cambridge, UK 1 Cambridge University, Cambridge, MA 1 Cambridge University, Cambaridge, England 1 Cambridge University Observatories, Cambridge, England 1 Calcutta, University, Calcutta, India 1 Calabria, Universita, Calabria, Italy 1 Cairo, University, Cairo, Egypt 1 Cagliari, Universita, Cagliari, Italy 1 Birmingham University, Birmingham, England 1 Andhra University, Waltair, India 62 691 MIT, Cambridge, MA 563 MIT, Cambridge, MA 320 MIT, Cambridge, Mass. 228 JPL, Pasadena, CA 227 McDonald Observatory 124 Arecibo Observatory, PR 115 SISSA, Trieste, Italy 98 ESO, Garching, Germany 85 Texas Univ., Austin 85 Paris, Observatoire, Meudon 78 Nice, Observatoire, France 65 Chicago Univ., IL 65 Boston University, MA 60 Montreal, Universite 55 Sao Paulo Univ., Brazil 55 Illinois Univ., Urbana 52 Steward Observatory 51 NORDITA, Copenhagen, Denmark 48 Universite Laval 46 Lick Observatory 43 Lund Observatory, Sweden 42 Toronto Univ., Canada 42 Stanford Univ., CA 42 MIT, Cambridge, MA, US 42 CNRS, Paris, France 41 Princeton Univ., NJ 38 Michigan Univ., Ann Arbor 36 Columbia Univ., New York 32 Bologna, Universita 31 Tel Aviv University 31 Bologna Univ., Italy 29 Nagoya Univ., Japan 29 Arizona Univ., Tucson 27 Kyoto Univ., Japan 27 Amsterdam Univ. 26 Inst. of Astronomy, Cambridge, UK 26 Caltech, Pasadena, CA, US 24 Victoria Univ., Canada 24 Catania, Universita 24 Arizona, University 23 Ritter Observatory 23 Montreal Univ., Canada 23 Meudon, Observatoire 22 UNAM, Mexico 22 Padua Univ., Italy 22 Milano, Universita 22 Boston Univ., MA 21 Padova, Universita 21 Montreal Univ. 20 Tel Aviv Univ., Israel 20 Palomar Observatory 20 Harvard University 19 Barcelona Univ., Spain 18 Wise Observatory 18 NASA, Washington, DC 17 Univ. of Cambridge, Cambridge, UK 17 Grenoble, Observatoire 16 Wise Observatory, Israel 16 DAEC, Meudon, France 16 Cornell University 15 SISSA 15 Paris, Observatoire 15 NASA, Washington, D.C. 15 Liege Univ., Belgium 15 JPL 15 Clemson Univ., SC 15 CNRS, France 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 Rice Univ., Houston, TX 13 Catania Univ., Italy 12 Pittsburgh Univ., PA 12 NSF, Washington, DC 12 NCAR, Boulder, CO, US 12 College de France, Paris 12 California Univ. 12 Calgary Univ., Canada 12 Barcelona Univ. 11 Waterloo Univ., Canada 11 Toledo Univ., OH 11 San Diego State Univ., CA 11 Roma, Universita, Rome 11 Paris VII, Universite 11 Oxford, University 11 Oregon Univ., Eugene 11 JPL, Pasadena 11 ESO, La Silla, Chile 11 CSIRO, Epping, Australia 10 Oklahoma Univ., Norman 10 Chicago Univ. 10 CESR, Toulouse, France 9 Univ. Laval 9 NIST, Boulder, CO 9 MIT 9 Kiel Univ., Germany 9 Harvard Univ., Cambridge, MA, US 9 DASOP, Meudon, France 9 College de France 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 CNRS, Marseille, France 8 CNRS 8 Aarhus Univ., Denmark 7 Wyoming Univ., Laramie 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 IUE Observatory 7 Harvard Univ., Cambridge, MA 7 Columbia University 7 Catania Univ. 7 CNRS, Meudon, France 7 CNR, Bologna, Italy 7 Bologna Univ. 6 Utrecht State Univ. 6 Torun Univ., Poland 6 Tokyo, University 6 Oslo Univ., Norway 6 NOAO, Tucson, AZ, US 6 Marseille, Observatoire 6 Lodz Univ., Poland 6 IZMIRAN, Troitsk, Russia 6 IRAM, Granada, Spain 6 IGN, Guadalajara, Spain 6 Florence Univ., Italy 6 ESA, Paris, France 6 CSIC, Blanes, Spain 6 CONICET, Argentina 5 Universidad de Chile 5 Univ. of Crete 5 UNAM, Mexico, Mexico 5 Trieste Univ. 5 Sussex Univ., Falmer, UK 5 Shiraz, University 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 Madrid, Planetario, Spain 5 Leiden, Observatory 5 Iowa Univ., Iowa City 5 HAO/NCAR, Boulder, CO, US 5 Delhi Univ., India 5 DEMIRM, Paris, France 5 Colorado Univ. 5 Ciudad Univ., Mexico 5 Cantabria Univ. 5 CNRS, Nice, France 5 CNRS, Lyon, France 5 Bologna, Univ., Italy 5 Berlin, Technische Univ. 5 Beijing Observatory 5 Arizona Univ. 4 UNAM, Mexico City, Mexico 4 UCSB, Santa Barbara, CA, US 4 Salonika Univ., Greece 4 SFA, Inc., Landover, MD, US 4 Pisa, Universita 4 Phoenix Corp., McLean, VA 4 Palermo Univ., Italy 4 Oulu Univ., Finland 4 Notre Dame Univ., IN 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 Lecce Univ., Italy 4 Lecce Univ. 4 LANL, Los Alamos, NM, US 4 IKI, Moscow, Russia 4 Georgia Univ., Athens 4 ENA, CA 91109 4 Dyer Observatory 4 DEMIRM, Meudon, France 4 DAPNIA, Yvette, France 4 CNRS, Orleans, France 4 CNR, Milano, Italy 4 CNR 4 Bonn Univ. 4 Biruni Observatory, Iran 3 York University 3 Van Vleck Observatory 3 USAF, Phillips Lab. 3 UCSC, Santa Cruz, CA, US 3 Toronto Univ. 3 The University, UK 3 Shiraz Univ. 3 ST-ECF, Garching, Germany 3 SISSA, Trieste 3 Roma, Universita 3 Rochester Univ. 3 Perkins Observatory 3 Pavia, Universita 3 Onsala Rymdobservatorium 3 ONERA, Chatillon, France 3 Nice, Observatoire, Nice 3 Nice Univ., France 3 NSF, Washington, DC, US 3 Mees Observatory, NY 3 Lund Univ., Sweden 3 Lawrence Berkeley Lab. 3 Kobe Univ., Japan 3 Kagoshima Univ., Japan 3 IZMIRAN, Troitsk, USSR 3 IAS, Orsay, France 3 Hughes STX Corp. 3 Granada Univ., Spain 3 Ferrara Univ., Italy 3 ESA, Madrid, Spain 3 DARC, Meudon, France 3 Cincinnati Univ., OH 3 Chamberlin Observatory 3 Cassino Univ., Italy 3 California Univ., Davis 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 Biruni Observatory 3 Besancon, Observatoire 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 VUB, Brussels, Belgium 2 Utrecht Univ. 2 Unvi. Paris, France 2 University of Crete 2 UniversiteLaval 2 Univ. di Pisa, Italy 2 Univ. Observatory 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 2 Technion, Haifa, Israel 2 Tartu Univ., Estonia 2 STScI 2 SISSA, Italy 2 Royal Observatory 2 Roma, Univ. 2 Roma II, Universita 2 Roma II, Univ., Rome 2 Roma I, Univ. 2 Regina Univ., Canada 2 Real Inst. 2 Queen Mary College 2 Porto Univ., Portugal 2 Pisa Univ., Pisa, Italy 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 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 2 Milan Univ., Italy 2 Mees Observatory 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 Leeds Univ. 2 L'Aquila Univ., Italy 2 Kyoto Univ., Uji 2 Kandilli Observatory 2 J.I. Holcomb Observatory 2 Ist. di Astronomia 2 Ilinois Univ., Urbana 2 IUCAA, Pune, India 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 Univ., Hilo 2 Hale Observatories 2 Groningen State Univ. 2 Graz Univ., Austria 2 Goteborg Univ., Sweden 2 GEOS, Versailles, France 2 Erindale College 2 EXOSAT Observatory 2 ESA-VILSPA, Madrid, Spain 2 Delaware Univ., Newark 2 Comtech, Lanham, Md. 2 CfA 2 Catania, Univ. 2 Cambridge, England 2 Cambridge University 2 CNRS, Toulouse, France 2 CNR, Rome, Italy 2 CFHT, Kamuela, HI, US 2 CERFACS 2 CEA, France 2 CASA, Boulder, CO, US 2 Brandon Univ., Canada 2 Bologna, Univ. 2 Bochum, Sternwarte 2 Bochum, Ruhr-Univ. 2 Beijing Univ., China 2 Bari Univ. 2 BDM International, Inc. 2 BDM Corp., McLean, Va. 2 Athens, University 2 Ankara Univ., Turkey 2 Alma Coll., Alma, MI, US 1 York Univ., Toronto 1 York Univ., Canada 1 Wyoming, University 1 Wisconsin Univ. 1 Wichita State Univ., KS 1 Whitin Observatory 1 Wellesley College 1 Washburn Observatory 1 Waseda University 1 Villanova University 1 Vigo, Universidad, Spain 1 Vatican Observatory 1 Vanderbilt Univ. 1 Valparaiso Univ., IN 1 Valladolid Univ., Spain 1 Valencia Univ., Spain 1 Universidad de Puer 1 Univ.-Sternwarte, Munich 1 Univ. de Chile 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 UNAM, Mexico D.F., Mexico 1 Tufts Univ., Medford, MA 1 Tromso, Universitetet 1 Toyama Univ., Japan 1 Tokyo Univ., Mitaka 1 Tokyo Univ. 1 Tohoku Univ., Sendai 1 Texas, Univerity 1 TRIUMF, Vancouver, Canada 1 TEL AVIV UNIVERSITY 1 Szeged Univ. 1 Synernet, Fremont, CA, US 1 Sydney, University 1 Sydney Univ. 1 Stockholm Univ., Sweden 1 Steward Observatory, AZ 1 Sternwarte Babelsberg 1 Stanford University 1 Stanford Universi 1 St. John's College 1 Sofia Univ., Bulgaria 1 SofTech, Waltham, MA 1 Sissa, Trieste, Italy 1 Shiraz University 1 Sevilla, Univ., Spain 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 SLAC, Stanford, CA, US 1 SISSA-ISAS, Trieste, Italy 1 SFA Inc., Landover, MD, US 1 SENER, Madrid, Spain 1 SAR, Riverdale, MD 1 SAR, Inc., Lanham, MD 1 Rome, Italy 1 Roma Univ. 1 Roma II, Univ. 1 Richmond Hill, Ontario 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 Potsdam Univ., Germany 1 Phoenix Corp., McLean 1 Phillips Laboratory ( 1 Phillips Lab., MA, US 1 Philadelphia, PA 1 Paris, Observatorie, Meudon 1 Paris, Observatoire, Paris 1 Paris, Observatoire, Meudo 1 Paris VII, Univ., Meudon 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 Observatorio Fabra, Spain 1 Observatori 1 Nordita 1 Nice, Univ., France 1 Nice Observatoire, France 1 Nice Observatoire 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 NBS, Gaithersburg, MD 1 NASA, Madrid, Spain 1 NASA 1 NAO, Kamogata, Japan 1 Muenster Univ. 1 Mt. 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Georgia State Univesity, Atlanta, GA, US 3 Wichita State University, Wichita, KS 3 New York, State Univ., Stony Brook 3 New South Wales, University, Kensington 3 Montana State University, Bozeman, MT 2 Wayne State University, Detroit, MI 2 San Jose State University, San Jose, Calif. 2 San Jose State University, CA 2 North Texas State University, Denton, Tex. 2 New York, State University, Oswego, N.Y. 2 New York, State University, Cortland 2 New York, City University, New York, N.Y. 2 Moscow State University, Moscow, Russia 2 California State University, Northridge 2 California State University, Fullerton 1 York University, North York 1 Wright State University, Dayton, OH 1 The Ohio State University, OH, US 1 New York, University, New York, NY 1 New York, University, New York, N.Y. 1 New York, State University, Stoney Brook, NY 1 New York, State University, Geneseo 1 New York, State University, Brockport, N.Y. 1 New York, State University, Albany, NY 1 New York, State University, Albany 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Hamburg, Gojenbergsweg, Hamburg, Germany 3 Universitat Hamburg, Hamburg, Germany 2 Univ.-Sternwarte, Munich, Germany 2 Univ. Erlangen-Nurnberg, Bamburg, Germany 2 Remeis-Sternwarte, Bamberg 2 Hamburger-Sterwarte, Hamgurg-Bergedorf, Germany 2 Hamburger Sternwarte, Hamburg 1 Univ.-Sternwarte, Jena, Germany 1 Univ.-Sternwarte, Germany 1 Univ. Erlangen-Nuernberg, Bamberg, Germany 1 Thueringer Landessternwarte, Tautenburg, Germany 1 Sonneberg, Sternwarte, East Germany 1 Remeis-Sternwarte, Bamberg, Germany 1 Remeis Sternwarte, Bamberg, Germany 1 Remeis Sternwarte, Bamberg 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, Germany 1 An der Sternwarte, Postdam, Germany 65 31 Pittsburgh, University, Pittsburgh, Pa. 71 Edinburgh, University, Edinburgh, Scotland 55 Pennsylvania, University, Philadelphia, Pa. 47 Stanford University, Stanford, CA 44 Pittsburgh, University, PA 31 Pittsburgh, University, Pittsburgh, Pa. 28 Pittsburgh, University, Pittsburgh, PA 12 Villanova University, Villanova, Pa. 12 Lehigh University, Bethlehem, PA 10 Allegheny Observatory, Pittsburgh, Pa. 8 Patras, University, Patras, Greece 5 Lehigh University, Bethlehem, Pa. 4 Wisconsin, University, Milwaukee, Wis. 2 Missouri, University, St. Louis, Mo. 2 Missouri, University, Columbia, MO 2 Hitotsubashi University, Kunitachi, Japan 2 Goteborg University, Goteberg, Sweden 2 Edinburgh, University, United Kingdom 2 Edinburgh University, Edinburgh, Scotland 2 Auburn University, Auburn, AL 1 Stanford, University, Stanford, CA 1 Pennsylvania, University, Pittsburgh, Pa. 1 Pennsylvania, University, Phildelphia, Pa. 1 Montana, University, Missoula, Mont. 1 Missouri, University, Columbia, Mo. 1 Kentucky, University, Louisville, KY 1 Istanbul, University, Istanbul, Turkey 1 Hitotsubashi University, Tokyo, Japan 1 Carnegie-Mellon University, Pittsburgh, PA 1 Carnegie Mellon University, Pittsburgh, PA, US 1 Bucknell University, Lewisburg, PA 1 Alabama, University, Birmingham, Ala. 66 105 Princeton University Observatory, NJ 282 Princeton University Observatory, NJ 169 Princeton University, NJ 126 Columbia University, New York, NY 118 Washington, University, Seattle, WA 97 Minnesota, University, Minneapolis, MN 85 Yale University Observatory, New Haven, CT 75 Helsinki, University, Observatory, Finland 74 Princeton University, Princeton, N.J. 68 Princeton Univ. Observatory, NJ 65 Princeton University, Princeton, NJ 44 Cornell University, Ithaca, NY, US 43 Rutgers University, Piscataway, NJ 42 Washington University, Saint Louis, MO 39 Tufts University, Medford, MA 31 Washington University, St. Louis, MO 27 Princeton University, Princeton, NJ, US 23 Alabama, University, University, AL 19 Lund, University, Observatory, Sweden 19 Howard University, Washington, DC 18 Millimeter Wave Observatory 16 Princeton University, New Observatory, NJ 16 Boston University, Boston, MA, US 15 Rutgers University, Piscataway, N.J. 14 Lund University, Observatory, Sweden 13 Copenhagen University Observatory, Denmark 13 Boston University, Boston, MA 9 Turku University Observatory, Finland 9 European Southern Observatory 8 Rice University, Houston, TX, US 7 Saint Andrews, University Observatory, Scotland 7 Denison University, Granville, OH 6 Ankara Univ. Observatory, Turkey 5 Wroclaw Univ. Observatory, Poland 5 Princeton University Observatory 5 Grenoble I, Universite, Observatoire, France 5 Columbia, University, New York, NY 5 Clemson University, Clemson, SC 5 Ankara University Observatory, Turkey 4 Wesleyan University, Middletown, CT 4 Warsaw University Observatory, Poland 4 Saint Andrews, University, Observatory, Scotland 4 Princeton University, New Observatory, Princeton 4 Princeton University, New Observatory 4 Princeton University 4 Drake University, Des Moines, IA 4 C.E. Kenneth Mees Observatory, NY 3 Princeton University, Observatory, NJ 3 Mount John University Observatory 3 London, University, Observatory, England 3 C. E. Kenneth Mees Observatory, NY 2 Warsaw, University, Observatory, Poland 2 Trinity University, San Antonio, TX 2 St. Andrews, University Observatory, Scotland 2 Mount Laguna Observatory, CA 2 Mount John Univ. Observatory 2 Helsinki, University, Observatory 2 Helsinki Univ., Observatory 2 Helsinki Univ. Observatory 2 Glasgow, University Observatory, Scotland 2 Copenhagen, University, Observatory, Denmark 2 Clarkson University, Potsdam, NY 2 C.E.K. Mees Observatory, NY 2 Aegean University Observatory, Izmir, Turkey 1 Yale University Observatory, New Haven 1 Wroclaw University, Observatory, Poland 1 Wroclaw University Observatory, Poland 1 Wroclaw Univ., Observatory, Poland 1 Washington University, Seattle, WA 1 Warner and Swasey Observatory 1 Turku University, Observatory, Finland 1 Turku University Observatory, Piikkio 1 Trent University, Peterborough 1 Syracuse University, Syracuse, NY 1 Stockholm University Observatory, Sweden 1 Royal University Observatory, Lund 1 Princeton, University, Princeton, NJ 1 Princeton University, Princeton 1 Princeton University, New Observatory, Princeton NJ 1 Princeton University, New Observatory Princeton, NJ 1 Princeton University Observatory, Princeton, N.J. 1 Princeton Univ., Observatory, NJ 1 Priceton University, NJ 1 Oxford University Observatory, England 1 Onagawa Magnetic Observatory 1 London, University Observatory, England 1 Lincoln University, Pennsylvania, US 1 Kutztown University, Kutztown, PA 1 Istanbul University Observatory, Turkey 1 Helsinki, University, Observatory, Helsinki 1 Helsinki, University Observatory, Helsinki 1 Helsinki, University Observatory, Finland 1 Helsinki University Observatory, Finland 1 Glasgow University Observatory, Scotland 1 Florence and George Wise Observatory 1 Erwin W. Fick Observatory 1 Drew University, Madison, NJ 1 Copenhagen University, Observatory, Denmark 1 Copenhagen University Observatory 1 Columbia University, New York, N.Y 1 Cincinnati Observatory, OH 1 C. E. K. 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Universiteit 26 Salonika, University, Greece 26 Liege, Universite, Liege, Belgium 25 Waterloo, University, Canada 25 Roma II, Universita, Rome, Italy 25 New Hampshire, University, Durham, NH 24 Nice, Universite, Nice, France 24 Montreal, Universite, Montreal 24 Hawaii, University, Mauna Kea, HI 23 Oregon, University, Eugene, OR 22 Tuebingen Univ., Germany 22 Keele, University, England 21 Toledo, University, Toledo, OH 21 St. Andrews, University, Scotland 21 Paris VI, Universite, Paris, France 21 Oklahoma, University, Norman, OK 21 Northwestern University, Evanston, Ill. 21 Nebraska, University, Lincoln, NE 20 Oslo, Universitetet, Norway 19 Trieste, Universita, Trieste, Italy 19 Torun, Uniwersytet, Poland 19 Pennsylvania, University 19 Paris VII, Universite, Paris 19 Padova, Universita, Padua 19 Northwestern University, Evanston, IL, US 19 Niigata University, Japan 19 Nebraska, University, Lincoln, Neb. 19 Clemson University, SC 19 Amsterdam, University 18 Trieste, Universita 18 Toronto, University 18 Leeds University, Leeds, England 18 Innsbruck, Universitaet, Austria 17 Villanova University, Villanova, PA 17 Lecce, Universita, Italy 17 Lausanne, Universite 17 Kentucky, University, Lexington, Ky. 16 Patras, University, Greece 15 Turku, University, Finland 15 Sheffield, University, England 15 Rochester, University, Rochester, NY 15 Palermo, Universita, Italy 15 Liege, Universite, Belgium 15 Lecce, Universita, Lecce, Italy 15 Kansas, University, Lawrence, KS 15 Heidelberg Univ., Germany 15 Boston University, Boston, Mass. 15 Adelaide, University, Australia 14 Wuerzburg Univ., Germany 14 Rochester, University, Rochester, N.Y. 14 Paris VI, Universite, France 14 Lausanne, Universite, Lausanne 13 Valparaiso University, IN 13 Torun, University, Poland 13 Paris XI, Univ., Orsay, France 13 Nebraska, University, Lincoln 13 Missouri, University, Saint Louis 13 Leeds, University, England 13 Kyoto University, Uji, Japan 12 Picardie, Universite, Amiens, France 12 Osaka University, Osaka, Japan 12 Notre Dame, University, IN 12 Nice, Universite, France 12 La Plata, Universidad Nacional 12 Gifu University, Japan 12 Edinburgh, University 12 Delhi, University, India 12 California, University 12 Arkansas, University, Little Rock 11 Palermo, Universita 11 Muenster Univ., Germany 11 Liege, Universite, Cointe-Ougree 11 Granada, Universidad, Spain 11 Fordham University, Bronx, N.Y. 11 Delhi, University, Delhi, India 11 Delaware, University, Newark, Del. 11 Brandon University, Canada 10 Washington State University, Pullman 10 Vermont, University, Burlington 10 Toyama University, Japan 10 Nevada, University, Las Vegas 10 Muenchen, Univ., Munich, Germany 10 Montreal, Universite, Canada 10 Georgia, University, Athens 9 York University, Downsview 9 Maine, University, Orono 9 Ibaraki University, Mito, Japan 9 Delaware, University, Newark, DE 9 Colgate University, Hamilton, NY 9 Chiba University, Japan 9 Cassino, Universita, Italy 9 California, University, Riverside 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Universitaet 6 Hawaii, University, Hilo 6 Goteborg, University, Sweden 6 Durham University, Durham, UK 6 Cincinnati, University, OH 6 Bristol, University, Bristol, England 6 Ankara, University, Turkey 6 Aarhus University, Denmark 5 Yamagata University, Japan 5 Vermont, University, Burlington, VT 5 Utah State University, Logan 5 Syracuse University, NY 5 Southwestern University, Georgetown, TX 5 Sofia, University, Bulgaria 5 Regina, University, Canada 5 Oxford University, Oxford 5 Oslo, University, Norway 5 Newcastle upon Tyne, University, England 5 New Orleans, University, LA 5 Michigan, University, Dearborn 5 Mankato State University, MN 5 Lodz, University, Poland 5 Lausanne, Universite, Switzerland 5 Kyoto, University, Kyoto, Japan 5 Kutztown University, PA 5 Kobe Women's University, Japan 5 Illinois, University, Champaign 5 Helsinki Univ., Finland 5 Heidelberg, Universitaet, Heidelberg 5 Cornell University, Ithaca 5 Columbia University, NY 5 Alaska, University, Fairbanks 5 Alabama, 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University, Kula, Hawaii 4 Gifu University, Gifu, Japan 4 Edinburgh University, Scotland 4 Durham, University, United Kingdom 4 Durham University, England 4 Denver, University, Denver, CO 4 Chalmers University of Technology 4 Bern Univ., Switzerland 4 Auburn University, AL 3 Wisconsin, University, Eau Claire, WI 3 West Virginia University, Morgantown 3 Utsunomiya University, Japan 3 Texas, University, San Antonio 3 Texas, University, Richardson 3 Texas, University, Dallas, Tex. 3 Texas University, Austin, Tex. 3 Tennessee, University, Knoxville, TN 3 Tennessee, University, Knoxville 3 Tel Aviv, University 3 Science Systems, Ltd., Bristol, England 3 Sao Paolo, Universidade, Brazil 3 Saint Mary's University, Halifax 3 Porto, Universidade, Portugal 3 Paris XI, Universite, Orsay, Essonne 3 Oxford University, Oxford, UK 3 Oulu, University, Oulu, Finland 3 Osaka Kyoiku University, Japan 3 Osaka City University, Japan 3 Newcastle-upon-Tyne, University, England 3 Nebraska, University 3 Nancy I, Universite, Nancy, France 3 Missouri, University, St. Louis 3 Melbourne, University, Australia 3 Mashhad, Ferdowsi University, Iran 3 Maryland, University, Adelphi, MD 3 Maine, University, Orono, ME 3 Lund, University, Sweden 3 Loyola University, Chicago, IL 3 Liege, Universite, Liege 3 Leiden, Rijksuniversiteit 3 Leicester Univ., Leicester, UK 3 Leeds Univ., United Kingdom 3 Lecce, Universita 3 La Plata, Univ. Nacional 3 Krakow, Uniwersytet, Poland 3 Kingston, Queen's University, Canada 3 Kagoshima University, Japan 3 Indiana University, Gary, IN 3 Ibaraki University, Mito 3 Hokkaido University, Sapporo 3 Hawaii, University, Manoa, Hawaii 3 Hawaii University, Honolulu, HI 3 Haifa, University, Tivon, Israel 3 Grenoble I, Universite, France 3 Gdansk, Uniwersytet, Poland 3 Doshisha University, Kyoto, Japan 3 Denver, University, Denver, Colo. 3 Denver, University, CO 3 Connecticut, University, Storrs 3 Cape Town, University, Rondebosch 3 Buenos Aires, Universidad, Argentina 3 Bruxelles, Universite Libre 3 Boston, University, Boston, MA 3 Bath, University, England 3 Basel Univ., Switzerland 3 Ball State University, Muncie, IN 3 Arya Mehr University, Teheran, Iran 2 Wien, Universitaet, Austria 2 Wichita State University, KS 2 Warsaw, University, Poland 2 Victoria, University 2 Vermont Univ., Burlington 2 Utsunomiya University, Mine, Japan 2 Tuebingen, Universitaet, Tuebingen 2 Tohoku University, Aoba, Japan 2 Texas University, Austin, TX 2 Texas University, Austin 2 Szczecin, Uniwersytet, Poland 2 Sussex, University, Falmer, England 2 Sussex University, Brighton 2 Stuttgart Univ., Germany 2 Stockholm, University, Sweden 2 Stockholm, Universitet, Stockholm 2 St. Andrews, University, Fife, Scotland 2 South Florida, University, Tampa, FL 2 Shiraz, University, Shiraz, Iran 2 Seattle Pacific University, WA 2 Salerno, Universita, Italy 2 Roma I, Universita, Italy 2 Rochester, University, Rochester 2 Rochester University 2 Ritter Observatory, Toledo 2 Queen's University, Belfast, UK 2 Pune, University, India 2 Puerto Rico, University, Rio Piedras 2 Preston Polytechnic, England 2 Penn State University, PA, US 2 Oulu, University, Finland 2 Ottawa, University, Ottawa, Canada 2 Orleans, Universite, France 2 Ohio Wesleyan University, Delaware, OH 2 Northeastern University, Boston, MA 2 Nagoya, University, Japan 2 Nagoya City University, Japan 2 Moscow State University, Russia 2 Montreal, University, Montreal, Canada 2 Missouri, University, Columbia 2 Milano, Universita, Milan 2 Messina, Universita, Messina, Italy 2 Messina, Universita, Messina 2 McMaster University, Ontario, Canada 2 McMaster University, Hamilton 2 McGill University, Montreal, Canada 2 Lyon I, Universite, Lyons, France 2 London, University, England 2 Lille I, Universite, Lille, France 2 Leicester, University, United Kingdom 2 Leicester University, England 2 Leicester Univ. 2 Kumamoto University, Japan 2 Kiev Univ., Kiev, Ukraine 2 Kentucky University, Lexington 2 Istanbul University, Turkey 2 Illinois, University, Chicago 2 Illinois University, Urbana 2 Hull, University, England 2 Hofstra University, Hempstead 2 Helsinki Univ. Observatory, Finland 2 Hawaii, University, Mauna Kea 2 Hawaii, University, Manoa 2 Hawaii University, Honolulu 2 Guelph, University, Canada 2 Gorakhpur, University, India 2 Gifu University, Kakamigahara 2 Genova, Universita, Genoa, Italy 2 Gannon University, Erie, PA 2 Ferrara, Universita, Italy 2 Crete, University, Iraklion, Greece 2 Copenhagen University, Denmark 2 Colgate University, Hamilton 2 Chalmers University, Onsala, Sweden 2 Bristol Univ., United Kingdom 2 Belgrade, University, Yugoslavia 2 Beirut, American University, Lebanon 2 Basel, Universitaet, Basel 2 Auckland, University, New Zealand 2 Auckland Univ., New Zealand 2 Athabasca University, Canada 2 Alaska, University, Anchorage 1 Zagreb, University, Yugoslavia 1 York University, Concord, Canada 1 York University, Canada 1 Yonsei University, Seoul, Korea 1 Yale University, Hew Haven, CT 1 Wuerzburg, Universitaet 1 Wuerzburg, Univ., Germany 1 Wroclaw, University, Poland 1 Wroclaw University, Wroclaw, Poland 1 Wise University, Israel 1 Wisconsin, University, Stevens Point 1 Wisconsin, University, Kenosha, Wis. 1 Wisconsin, Univerity, Madison, WI 1 Wilberforce University, OH 1 Western Ontario, University, London, CA 1 Western Ontario, University, Canada 1 Washington, University 1 Washburn University, Topeka, KS 1 Villanova, University, Villanova, PA 1 Villanova, University, PA 1 Villanova, University 1 Vilanova University, Villanova, PA 1 Vikram University, Ujjain, India 1 Victoria, University, Australia 1 Victoria University, Canada 1 Vermont, Universtiy, Burlington 1 Vermont, University, Burlington, Vt. 1 Venezia, Universita, Venice, Italy 1 Valpariso, University, IN 1 Valladolid, Universidad, Spain 1 Utrecht State University, Netherlands 1 Utah, State University, Logan 1 Uppsala, University, Sweden 1 Uppsala, Universitet, Sweden 1 Uppsala Universitet, Sweden 1 Umea Universitet, Sweden 1 Turku University, Finland 1 Tuebingen, Universitaet 1 Tuebingen, Universitae 1 Tsukuba, University, Japan 1 Trondheim, University, Norway 1 Tromso, Universitetet, Tromso 1 Triste, Universita, Italy 1 Trinity Western University, Langley, Canada 1 Trento, Universita, Povo, Italy 1 Tours, Universite, France 1 Toledo, University, Ohio 1 Tokyo, University Japan 1 Tokyo, Science University, Japan 1 Tokyo Gakugei University, Koganei 1 The University, Durham, UK 1 Texas, University,, Austin 1 Texas, University, San Antonio, TX 1 Texas, University, Dallas, TX 1 Texas, University, Austin TX 1 Texas, University, Arlington, Tex. 1 Texas University, Austin TX 1 Texas Tech University, Lubbock, TX 1 Texas Tech University, Lubbock 1 Tel-Aviv University, Israel 1 Tel Aviv, University, Israel 1 Teheran University, Teheran, Iran 1 Tabriz, University, Iran 1 Sussex, University, Sussex, England 1 Sussex, University, Falmer 1 Stetson University, DeLand, FL 1 Stanford, University, CA 1 Slippery Rock University, PA 1 Shiraz University, Iran 1 Shimonoseki City University, Japan 1 Sevilla, Universidad, Seville 1 Scranton, University, PA 1 Sarajevo, Univerzitet, Yugoslavia 1 Sao Paulo, Universidad, Brazil 1 Santiago, Universidad, Chile 1 Santander, University, Santander, Spain 1 Santander, Universidad Spain 1 Salamanca, Universidad, Spain 1 Rome, Universita, Rome, Italy 1 Roma II, Universite, Rome, Italy 1 Roma II, Universita, Italy 1 Roma I, Universita, Rome 1 Rijeka, University, Croatia 1 Rennes I, Universite, France 1 Rennes I, Univ., France 1 Rajshahi University, Bangladesh 1 Puget Sound, University, Tacoma, WA 1 Puerto Rico, University, San Juan 1 Puerto Rico, Universidad, San Juan 1 Potchefstroom, University 1 Poona, University, Poona, India 1 Poona University, India 1 Pisa, Universita, Pisa 1 Paris XI, Universite, Paris, France 1 Paris XI, Universite, Orsay 1 Paris VII, Universite, Fance 1 Paris VI, Univ., Orsay, France 1 Paris IX, Universite, Paris, France 1 Padova, Universita, Italy 1 Oxford, University, Oxford 1 Osmania University, Hyderabad 1 Oslo, Universitet, Norway 1 Osaka, Kyoiku University, Japan 1 Osaka Sangyo University, Japan 1 Oregon, Universiy, Eugene 1 Oregon University, Eugene, OR 1 Opole, Pedagogical University, Poland 1 Oklahoma, University, Norman, Ok 1 Oita University, Japan 1 Ohio Wesleyan University, Delaware 1 Ohio State university, Columbus 1 Ohio State University, Manhattan 1 Ohio State University Columbus 1 Ohio State University 1 Nottingham, University, England 1 Northwestern Univeristy, Evanston, IL 1 Nice, Universite, Nice 1 Newcastle, University, Australia 1 New York University 1 New Hampshire, University Durham, NH 1 Nebraska University, Lincoln 1 Napoli, Universita, Naples 1 Muenster, Univ., Germany 1 Muenchen, Universitaet 1 Montreal, Universite Montreal 1 Montreal, Universiite, Montreal 1 Montreal Universite, Montreal 1 Montpelier II, Universite, France 1 Missouri, University, Rolla, MO 1 Millersville University, PA 1 Michigan State University, Lansing 1 Mew Mexico, University, Albuquerque 1 Meisei University, Hino, Japan 1 Meerut, University, Meerut, India 1 Meerut University, Meerut, India 1 McMaster Univ., Hamilton 1 McDonald University, Austin, TX 1 Massachussetts, University, Amherst 1 Massachusetts University 1 Maryland, University, Collge Park 1 Maryland, University, College P 1 Maryland, University, Baltimore 1 Manchester, Victoria Univ. 1 Manchester, University, England 1 Maine, University, Orono, Me. 1 Madrid, Universidad Autonoma 1 Lund University, Sweden 1 Lowell, University, Lowell, Mass. 1 Ljubljana, Univerza, Yugoslavia 1 Ljubljana, University, Yugoslavia 1 Lisbon Univ., Portugal 1 Liege, Universite de l'Etat 1 Liege, Universite 1 Lethbridge, University, Canada 1 Leiden, Rijksuniversiteit, Leiden 1 Leicester, Universtity, Leicester, England 1 Leicester, University, Leicester, Leics., England 1 Leicester, University, Leicester England 1 Leicester, University, Leicester 1 Leicester, University, Eng 1 Leicester University, Leicester, UK 1 Leicester Univ., UK 1 Leeds, University 1 Leeds University, Leeds 1 Lecce, Universita, Lecce 1 Lawrence University, Appleton, WI 1 Laval, Universite, Quebec, Canada 1 Lausanne, Universite Lausanne 1 Lausanne, Univ., Switzerland 1 Lausanne Univ., Switzerland 1 Lancaster, University, England 1 L'Aquilla, Universita, Italy 1 L'Aquila, Universita, L'Aquila 1 Kyoto University Japan 1 Koeln, Universitaet, Cologne 1 Kiel, Neue Universitaet 1 Khartoum, University, Sudan 1 Kenucky, University, Lexington, KY 1 Kentucky, University, Lexington, 1 Kent, University, England 1 Keele, University, United Kingdom 1 Ist. Universitario Navale 1 Illinois, University, Urbana IL 1 Illinois University, Urbana, IL 1 Ibaraki, University, Mito, Japan 1 Ibaraki University, Mita, Japan 1 Hull, University, Hull, England 1 Howard University, Washington 1 Houston, University 1 Hosei University, Koganei, Japan 1 Hofstra Univ., Hempstead 1 Hiroshima University 1 Helsinki University of Technology 1 Hawaii, Unversity, Honolulu 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 Hanover Univ., Germany 1 Haifa, University, Oranim, Israel 1 Haifa, University, Israel 1 Groningen, University, Netherlands 1 Grenoble I, Universite, Grenoble 1 Grenoble I, Universite 1 Goterborg, Universitet, Sweden 1 Goteborg, University 1 Gorakhpur, University, Gorakhpur 1 Giessen, Universitaet 1 Georgia, University, Athens, Ga. 1 Georgia, University, Athens, GA 1 Georgia State University 1 Geneve, Universite, Geneva 1 Gdansk Univ., Poland 1 Fukui University, Japan 1 Fordham University, Bronx, NY 1 Florida, University, Gainsville 1 Florida, University, Alachua 1 Firenze, Universita, Arcetri, Italy 1 Firenze, Universita 1 Emory University, Oxford, GA 1 Edinboro University, PA 1 EASAMS, Ltd., Camberley, England 1 Durham, University, Durham 1 Duke University, Durham, N.C. 1 Duke Univerity, Durham, NC 1 Dijon, Universite, Dijon, France 1 Denver University, Denver, Colo. 1 Dayton, University, Dayton, Ohio 1 Dalhousie University, Halifax 1 Cukurova University, Adana 1 Crete, University, Heraklion 1 Cornel University, Ithaca, N.Y. 1 Copenhasen, University, Denmark 1 Columbia, University, New York 1 Columbia Unversity, New York 1 Colorado, University, Boulder, Co 1 Colorado University, Boulder 1 Colgate University, Ithaca, N.Y. 1 Chile, Universidad, Santiago 1 Chicago, Univiersity, IL 1 Chicago, University, Illinois 1 Chicago, University, Chigago, Ill. 1 Chicago, University, Chicago, Il 1 Chicago, University, Chicago 1 Chicago, Loyola University, IL 1 Chicago University, IL 1 Chambery, Universite, France 1 Case Western University, Cleveland, OH 1 Canterbury, University 1 Cantabria, Universidad 1 Cambrige University, England 1 Cambridge,, University, England 1 Cambridge University, Engla 1 California University, Berkeley 1 Calabria, Universita, Italy 1 Calabria, Universita, Cosenza 1 Cairo Univ., Giza, Egypt 1 Cagliari, Universita 1 Burdwan, University, Burdwan, India 1 Buenos Aires, University, Argentina 1 Brussels, Free University, Belgium 1 Brighton Polytechnic, England 1 Brigham Young University, Laie, HI 1 Bradford, University, England 1 Boulder, University 1 Boston, University, MA 1 Bologna Universita, Italy 1 Bloomsburg University 1 Birmingham, University, Birmingham 1 Besancon, Universite, France 1 Baylor University, Waco, TX 1 Battelle Observatory, Richland 1 Bari, Universita, Italy 1 Bangalore University, India 1 Austin State University, TX 1 Attila Jozsef University, Szeged 1 Atlanta University, GA 1 Arizona, University. Tucson 1 Arizona, University, Tuscon, AZ 1 Arizona, University, Tuscon 1 Arizona State Universty, Tempe 1 Arizona State University, Tucson 1 Ankara University, Turkey 1 Alaska, University, Fairbanks, AK 1 Aberdeen, University, Scotland 1 Aarhus, Universitet, Aarhus 68 251 Univ. of Tokyo, Tokyo, Japan 138 Univ. of Texas, Austin, TX, US 116 Tokyo, University, Tokyo, Japan 78 Kyoto University, Kyoto, Japan 65 Univ. of Wisconsin, Madison, WI, US 57 Univ. of Tokyo, Tokyo, Japan 47 Tokyo Univ., Japan 43 Univ. of Toronto, Toronto, Ontario, Canada 40 University of Tokyo, Tokyo, Japan 35 Univ. di Padova, Padova, Italy 27 Sophia University, Tokyo, Japan 27 Osaka University, Toyonaka, Japan 19 Univ. Kiel, Kiel, Germany 17 Nagoya Univ., Nagoya, Japan 16 Tohoku Univ., Sendai, Japan 16 Kyoto Univ., Kyoto, Japan 13 Hokkaido Univ., Sapporo, Japan 12 Univ. of Sydney, Sydney, Australia 11 Univ. of Tokyo, Mitaka, Tokyo, Japan 11 Univ. of Tokyo, Bunkyo, Tokyo, Japan 11 Univ. of Lund, Lund, Sweden 10 Univ. of Toronto, Toronto, Canada 10 Univ. of Tokyo, Tanashi, Tokyo, Japan 10 Univ. of Bern, Bern, Switzerland 10 Univ. di Lecce, Lecce, Italy 10 Univ. de Montreal, Montreal, Canada 10 Rikkyo Univ., Toshima, Tokyo, Japan 10 Kyoto Univ., Uji, Japan 10 Kyoto Univ., Sakyo, Kyoto, Japan 9 Univ. of Waikato, Hamilton, New Zealand 9 Univ. of Padova, Padova, Italy 9 Univ. de Nice, Nice, France 8 Univ. of Toronto, Ontario, Canada 8 Univ. of Hong Kong, Hong Kong 8 Univ. of Durham, Durham, UK 8 Tokyo Univ., Mitaka, Japan 8 Osaka Univ., Osaka, Japan 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 Sophia Univ., Tokyo, Japan 7 Kyoto Sangyo Univ., Kyoto, Japan 7 Kiso Observatory, Japan 7 Keio University, Yokohama, Japan 6 University of Tokyo, Nagano, Japan 6 Univ. of Turku, Piikkio, Finland 6 Univ. of Oslo, Oslo, Norway 6 Univ. of Calgary, Calgary, Canada 6 Univ. de Liege, Liege, Belgium 6 Univ. Laval, Quebec, Canada 6 Univ. La Sapienza, Roma, Italy 6 Tokyo Univ., Tokyo, Japan 6 Tohoku Univ., Aoba, Sendai, Japan 6 Rikkyo University, Tokyo, Japan 6 Osaka Univ., Toyonaka, Japan 6 Kyoto Sangyo Univ., Japan 5 York Univ., Toronto, Canada 5 Yamanashi Univ., Takeda, Japan 5 Univ. pr., Moscow, Russia 5 Univ. of Toronto, Toronto, ON, Canada 5 Univ. of Tokyo, Meguro-ku, Tokyo, Japan 5 Univ. of Electro-Communications, Tokyo, Japan 5 Univ. di Bologna, Bologna, Italy 5 Univ. Park, Hilo, HI, US 5 The Univ. of Tokyo, Tokyo, Japan 5 Osaka Univ., Toyonaka, Osaka, Japan 5 Kokugakuin University, Tokyo, Japan 4 Univ. of Trondheim, Dragvoll, Norway 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 British Columbia, UK 4 Univ. de Montreal, Quebec, Canada 4 Univ. de Cantabria, Spain 4 Univ. La Sapienza, Rome, Italy 4 Tokyo Gakugei Univ., Tokyo, Japan 4 The University of Tokyo, Tokyo, Japan 4 Rikkyo Univ., Tokyo, Japan 4 Kyushu Univ., Fukuoka, Japan 4 Kobe Univ., Kobe, Japan 4 Kiso Observatory, Nagano, Japan 3 Waseda Univ., Shinjuku, Tokyo, Japan 3 University of Toronto, Toronto, Canada 3 University of Tokyo, Mitaka, Tokyo, Japan 3 Univ. zu Koeln, Koeln, 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 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 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 Tokyo Inst. of Technology, Tokyo, Japan 3 Osaka Univ., Osdaka, Japan 3 Kokugakuin Univ., Tokyo, Japan 2 Utsunomiya Univ., Japan 2 University of Tokyo, Tokyo, Tokyo 2 Univ.of London, London, UK 2 Univ. of Wiconsin, Madison, WI, US 2 Univ. of Victoria, Victoria, Canada 2 Univ. of Trodheim, Dragvoll, Norway 2 Univ. of Torino, Torino, Italy 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 Osaka Prefecture, Osaka, Japan 2 Univ. of Nigeria, Nsukka, Nigeria 2 Univ. of Nigeria, Nsukka 2 Univ. of Moscow, Moscow, Russia 2 Univ. of Leeds, Leeds, UK 2 Univ. of Hong Kong, Hong Kong, China 2 Univ. of Glasgow, Glasgow, Scotland 2 Univ. of Denver, Denver, CO, US 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 Madrid, Madrid, Spain 2 Univ. de Lisboa, Lisbon, Portugal 2 Univ. de Lisboa, Lisboa, Portugal 2 Univ. Wien, Wien, Austria 2 Univ. Wien, Weien, Austria 2 Univ. Tubingen, Tubingen, Germany 2 Univ. Munchen, Munchen, Germany 2 Univ. J. Fourier, Grenoble, France 2 Univ. Hannover, Hannover, Germany 2 Univ. Gent, Gent, Belgium 2 Univ. Bordeaux, Floirac, France 2 Univ. Bochum, Bochum, Germany 2 Univ. Autonoma, Madrid, Spain 2 Univ of Athens, Zografos, Greece 2 Univ of Arizona, Tucson, AZ, US 2 Toyokawa Observatory, Japan 2 Toyama University, Toyama, Japan 2 Toyama University, Takaoka, Japan 2 Toyama Univ., Toyama, Japan 2 Tokyo Univ., Komaba, Japan 2 Seikei Univ., Tokyo, Japan 2 Ochanomizu Univ., Tokyo, Japan 2 Nagoya Univ., Toyokawa, Japan 2 Nagoya Univ., Nagoya, Aichi, Japan 2 Kyoto Univ., Uji and Kyoto, Japan 2 Kinki University, Osaka, Japan 2 Dokkyo University, Soka, Japan 1 Waseda Univ., Tokyo, Japan 1 Waseda Univ., Okubo, Tokyo, Japan 1 University of Tsukuba, Ibaraki, Japan 1 University of Tromso, Tromso, Norway 1 University of Kobe, Kobe, Japan 1 University of Iowa, IA, US 1 Univ. of Washington, WA, US 1 Univ. of Virginia, VA, 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 Tokyo, Nagano, Japan 1 Univ. of Tokyo, Bunko, Tokyo, Japan 1 Univ. of South Africa, Pretoria 1 Univ. of Sao Paulo, Sao Paulo, Brazil 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 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 Iceland, Reyjavik, Iceland 1 Univ. of Helsinki, Finland 1 Univ. of Hawaii, HI, 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 Crete, Greece 1 Univ. of Calgary, Alberta, Canada 1 Univ. of Bologna, Bologna, Italy 1 Univ. of Aarhus, Aarhus, Denmark 1 Univ. di Torino, Torino, Italy 1 Univ. di Pavia, Pavia, Italy 1 Univ. degli Studi, Milano, Italy 1 Univ. de Valencia, Spain 1 Univ. de Sao Paulo, Paulo, Brazil 1 Univ. de Puerto Rico, Humacao 1 Univ. de Pavia, Pavia, Italy 1 Univ. de Moncton, Moncton, Canada 1 Univ. Paris, Paris, France 1 Univ. Paris, Meudon, France 1 Univ. Paris 7, Meudon, France 1 Univ. Minchen, Munchen, Germany 1 Univ. Laval,Quebec, Canada 1 Univ. Koeln, Koeln, Germany 1 Univ. Jagiellonski, Krakow, Poland 1 Univ. Graz, Graz, Austria 1 Univ. Coll. London, London, UK 1 Univ di Milano, Milano, Italy 1 Univ de Nice, Nice, France 1 Tsuda College, Kodaira, Tokyo, Japan 1 Toshiba Corp., Kawasaki, Japan 1 Tokyo University, Tokyo, Japan 1 Tokyo Inst. of Technology, Japan 1 Tokai Univ., Kanagawa, Japan 1 Toho Univ., Chiba, Japan 1 The University of Tokyo, Nagano, Japan 1 Shizuoka Univ., Japan 1 Shiba High School, Tokyo, Japan 1 Niigata Univ., Niigata, Japan 1 Nihon Univ., Narashino, Japan 1 Nagoya City Univ., Nagoya, Japan 1 NEC Corp., Kawasaki, Japan 1 Kyushu Univ., Fukuopka, Japan 1 Kyoto University, Sakyo, Japan 1 Kyoto Univ., Sakyo-ku, Kyoto, Japan 1 Kyoto Gakuen Univ., Japan 1 Kwasan Observatory, Kyoto, Japan 1 Kumamoto Univ., Japan 1 Kokugakuin Univ., Shibuya, Tokyo, Japan 1 Kokugakuin Univ., Higashi, Tokyo, Japan 1 Kobe Univ., Hyogo, Japan 1 Kiso Observatory, Tokyo, Japan 1 Kiso Observatory, Nagano 1 Kinki Univ., Osaka, Japan 1 Keio University, Tokyo, Japan 1 Keio Univ., Hiyoshi, Japan 1 Iwate Univ., Morioka, Japan 1 Ibaraki Univ., Bunkyo, Mito, Japan 1 Hosei University, Tokyo, Japan 1 Hosei Univ., Koganei, Tokyo, Japan 1 Hitotsubashi Univ., Tokyo, Japan 1 Hirosaki Univ., Japan 1 Hida Observatory, Gifu, Japan 1 Gifu Univ., Gifu, Japan 69 30 Ecole Normale Superieure, Paris, France 134 Ecole Normale Superieure, Paris, France 75 Paris, Observatoire, Paris, France 66 Ecole Normale Superieure, Paris 66 Bureau des Longitudes, Paris, France 34 Scuola Normale Superiore, Pisa, Italy 23 College de France, Paris, France 21 Paris VII, Universite, Paris, France 20 Ecole Polytechnique, Palaiseau, France 5 Lyon, Ecole Normale Superieure, France 4 Universite Paris 7, Paris, France 4 Univ. Pierre et Marie Curie, Paris, France 4 Meudon, Observatoire, Paris, France 4 Ecole Normale Superieure 3 Pisa, Scuola Normale Superiore, Pisa, Italy 3 Lyon, Ecole Normale Superieure, Lyons, France 3 Ecole Normale Superieure, France 3 Ecole Normale Superieure de Jeunes Filles 3 Ecole Normale Superieure Paris 1 Scuola Normale Superiore 1 Paris Observatoire, Paris, France 1 Lyon, Ecole Normale Superieure, Lyons 1 European Space Agency, Paris, France 1 Ecole Normale Superieure, 75005 Paris, France 1 Ecole Normale Superieure de Lyon, Lyon, France 1 Ecole Normale Supereure, Paris, France 1 Ecole Normal Superieure, Paris, France 1 Ecole Nationale Superieure, Paris, France 1 ESA, Space Science Dept., Paris, France 1 Bureau des Longituds, Paris, France 1 Bureau de Longitudes, Paris, France 70 21 Geneve, Observatoire, Sauverny, Switzerland 306 Geneve, Observatoire, Sauverny, Switzerland 28 Geneva Observatory, Sauverny, Switzerland 24 Dunsink Observatory, Dublin, Ireland 23 Geneve, Observatoire, Chavannes-des-Bois, Switzerland 16 Observatoire de Geneve, Sauverny, Switzerland 4 Geneve Observatoire, Sauverny, Switzerland 3 Lund, Observatory, Lund, Sweden 2 Kapteyn Observatory, Roden, Netherlands 2 Geneve, Observatoire, Sauverny 2 Geneve, Observatoire, Geneva, Switzerland 1 Univ. Bern, Bern, Switzerland 1 Lausanne, Universite, Sauverny, Switzerland 1 Lausanne Univ., Sauverny, Switzerland 1 Geneve, Universite, Geneva, Switzerland 1 Geneve, Observatoire, Souverny, Switzerland 1 Geneve, Observatoire, Chavanne-des-Bois, Switzerland 1 Geneve, Obseratoire, Sauverny, Switzerland 1 Geneva, Observatory, Sauverny, Switzerland 1 Geneva, Observatoire, Sauverny, Switzerland 1 Exosat Observatory, Leiden, Netherlands 1 Dunsink Observatory, Dunsink, Ireland 71 13 NASA. Marshall Space Flight Center, Huntsville, AL, US 680 NASA. Goddard Space Flight Center, Greenbelt, MD, 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. 14 NASA/Goddard Space Flight Center, Greenbelt, MD, US 9 NASA. Goddard Space Flight Center, Greebelt, MD, US 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 3 NASA. Goddard Space Flight Center, New York, NY, US 1 NASA. Marshall Space Flight Center, Huntsville, AL, S 1 NASA Marshall Space Flight Center, Huntsville, AL, US 1 NASA Goddard Space Flight Center, Greenbelt, MD, US 72 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 73 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 74 12 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 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 75 22 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 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. 76 9 SERC, Rutherford Appleton Laboratory, Didcot, England 51 SERC, Rutherford Appleton Laboratory, Didcot, England 31 Rutherford Appleton Laboratory, Didcot, England 5 Rutherford Appleton Laboratory, Didcot 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 77 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 78 144 Bonn, Universitaet, Bonn, West Germany 129 Milano, Universita, Milan, Italy 125 Wien, Universitaet, Vienna, Austria 120 Bonn, Universitaet, Bonn, West Germany 119 Heidelberg, Universitaet, Heidelberg, West Germany 96 Basel, Universitaet, Binningen, Switzerland 80 Bochum, Ruhr-Universitaet, Bochum, West Germany 79 Torino, Universita, Turin, Italy 59 Bologna, Universita, Bologna, Italy 56 Tuebingen, Universitaet, Tuebingen, West Germany 56 Koeln, Universitaet, Cologne, West Germany 47 Wuerzburg, Universitaet, Wuerzburg, West Germany 41 Berlin, Technische Universitaet, Berlin, West Germany 40 Napoli, Universita, Naples, Italy 34 Ruhr-Universitaet, Bochum, West Germany 34 Bonn, Universitaet, West Germany 26 Bern, Universitaet, Switzerland 25 Heidelberg, Universitaet, West Germany 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 22 Bonn Univ., Germany 21 Koeln, Univ., Cologne, Germany 20 Tuebingen, Universitaet, West Germany 18 Univ. Bonn, Bonn, Germany 16 Aarhus, Universitet, Aarhus, Denmark 15 Pisa, Universita, Pisa, Italy 14 Oslo, Universitetet, Oslo, 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 Muenster, Universitaet, Muenster, West Germany 9 Bonn, Univ., Sternwarte, Germany 9 Basel, Universitaet, Basel, Switzerland 8 Wuerzburg, Universitaet, West Germany 8 Sternwarte der Universitaet Bonn, Bonn, Germany 8 Ruhr-Universitat Bochum, Bochum, Germany 8 Hamburg, Universitaet, Hamburg, West Germany 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 Otago, University, Dunedin, New Zealand 4 University of Bonn, Bonn, Germany 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 Sternwarte der Universitat Bonn, Bonn, Germany 3 Muenster, Universitaet, Germany 3 Mainz, Universitaet, West Germany 3 Kiel, Universitaet, West Germany 3 Kiel, Universitaet, Kiel, West Germany 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 2 Wurzburg, Universitat, Wurzburg, West Germany 2 Universitaet Potsdam, Potsdam, Germany 2 Universitaet Bonn, Bonn, Germany 2 Univ. of Bonn, Bonn, Germany 2 Stuttgart, Universitaet, Stuttgart, West Germany 2 Ruhr-Universitat, Bochum, West Germany 2 Oslo, University, Blindern, Norway 2 Mons, Universite, Belgium 2 Mons, Universite d'Etat, Mons, Belgium 2 Mainz, Universitaet, Mainz, West Germany 2 Lunds Universitet, Lund, Sweden 2 Lund University, Lund, Sweden 2 London, University, London, England 2 Jena, Universitaets-Sternwarte, Germany 2 Hannover, Universitaet, Hanover, West Germany 2 Goettingen, Universitaet, West Germany 2 Giessen, Universitaet, Giessen, West Germany 2 Bonn Univ., Bonn, Germany 2 Bari, Universita, Bari, Italy 2 Aarhus Universitet, Arhus, Denmark 1 Wurzburg, Universitaet, Wurzburg, West Germany 1 Wuerzbuerg, Universitaet, Wuerzburg, West Germany 1 Wein, Universitaet, Vienna, Austria 1 Vienna, Universitaet, Wien, Austria 1 Universitat Postdam, Postdam, Germany 1 Universitaet zu Koln, Koln, Germany 1 Univ. Bonn, 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 Toulon, Universite, La Garde, France 1 Torun, Universytet, Torun, Poland 1 Torun Uniwersytet, Torun, Poland 1 Tbingen, Universitt, Tbingen, West Germany 1 Sternwarte, Kiel, West Germany 1 Ruhr-Universitat, Bochum, Germany 1 Ruhr Universitat, Bochum, West Germany 1 Rostock, Universitaet, Rostock, East Germany 1 Roma, Univesita, Rome, Italy 1 Radiosternwarte, Kiel, West Germany 1 Oslo, University, Oslo, Norway 1 Oslo, Universitetet, Blindern, Norway 1 Muenster University, Muenster, Germany 1 Muenchen, Universitaet, Munich, Germany 1 Milan, Universita, Milan, Italy 1 Lund, University, Lund, Sweden 1 Koen, Universitaet, Cologne, West Germany 1 Kobenhavn, Universitet, Copenhagen, Denmark 1 Jena, Universitaet, Germany 1 Jena, Univ.-Sternwarte, Germany 1 Groningen, Rijksuniversiteit, Groningen, West Germany 1 Graz, Universitaet Austria 1 Goettingen, Universitaet, Goettingen, West Germany 1 Ege University, Bornovo, Turkey 1 ESO, Garching, West Germany 1 ESA Porz-Wahn, West Germany 1 Bonn, University, Federal Republic of Germany 1 Bonn, Universitat, Bonn, West Germany 1 Bonn, Universitaet,, Bonn, West Germany 1 Bonn, Universitaet, Sternwarte, Daun, West Germany 1 Bonn, Univ., Germany 1 Bologna University, Bologna, Italy 1 Bochum, Sternwarte, West Germany 1 Bochum, Ruhr Universitaet, Bochum, West Germany 1 Bochcum, Ruhr-Universitaet, Bochum, West Germany 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 Aarhus University, Munchen, Germany 79 17 Landessternwarte Koenigstuhl, Heidelberg, Germany 97 Landessternwarte Koenigstuhl, Heidelberg, Federal Republic of Germany 44 Landessternwarte Koenigstuhl, Heidelberg, Germany 14 Landessternwarte Koenigstuhl, Heidelberg, West Germany 13 Landessternwarte, Heidelberg, Germany 8 Landessternwarte, Koenigstuhl, West Germany 4 Landessternwarte Konigstuhl (LSW), D-69117 Heidelberg, Germany 3 Landessternwarte Koenigstuhl, Heidelberg 2 Landessternwarte, Koenigstuhl, Heidelberg, West Germany 2 Landessternwarte Konigstuhl, D-69117 Heidelberg, Germany 2 Landessternwarte Heidelberg, Heidelberg, Germany 1 Landessternwarte, Konigstuhl, Heidelberg, Germany 1 Landessternwarte, Koenigstuhl, Heidelberg, Germany 1 Landessternwarte, Heidelburg, Germany 1 Landessternwarte Konigstuhl, 69117 Heidelberg, Germany 1 Landessternwarte Heidelberg-Konistuhl, Heidelberg, Germany 1 Landessternwarte Heidelberg-Koenigstuhl, Heidelberg, Germany 1 Landessternwarte Heidelberg, Germany 80 19 Meudon, Observatoire, Meudon, Hauts-de-Seine, France 478 Meudon, Observatoire, Meudon, Hauts-de-Seine, France 351 Paris, Observatoire, Meudon, Hauts-de-Seine, France 49 Meudon, Observatoire, Meudon, Hauts-de-Seine 14 Paris, Observatoire, Meudon, Hauts-de-Seine 7 Meudon Observatoire, Meudon, Hauts-de-Seine, France 3 Paris VII, Universite, Meudon, Hauts-de-Seine, France 2 Meudon, Observatorie, Meudon, Hauts-de-Seine, France 2 Meudon, Observatoire, Meudon, Haute-de-Seine, France 2 Meudon, Observatoire, Meudon, 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 Observatoire, Meudon, Paris VII, Universite, France 1 Meudon Observatoire, Hauts-de-Seine 81 12 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 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 82 54 Universitaets-Sternwarte, Goettingen, West Germany 128 Universitaets-Sternwarte, Goettingen, West Germany 69 Universitaets-Sternwarte, Goettingen, Federal Republic of Germany 47 Universitaets-Sternwarte, Munich, West Germany 18 Remeis-Sternwarte, Bamberg, West Germany 11 Universitaets-Sternwarte, Goettingen, Germany 11 Univ.-Sternwarte, Goettingen, Germany 9 Universitaetssternwarte, Goettingen, West Germany 9 Universitaets-Sternwarte, Vienna, Austria 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, Universitaets-Sternwarte, Munich, West Germany 3 Hamburg, Universitaet, Sternwarte, Hamburg, West Germany 3 Bamberg, Remeis-Sternwarte, Bamberg, 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 Universitaetssternwarte, Goettingen, Federal Republic of Germany 2 Universitaets-Sternwarte, Jena, 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, Gottingen, Federal Republic of 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 Univ.-Sternwarte, Gottingen, Germany 1 Muenchen, Universitaets- Sternwarte, Munich, West Germany 1 Kiel, Universitaet, Sternwarte, Kiel, West Germany 83 23 Space Telescope Science Institute, Baltimore, MD, US 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 Inst., Baltimore, MD, US 84 15 Stockholms Observatorium, Saltsjobaden, Sweden 123 Stockholms Observatorium, Saltsjobaden, Sweden 33 Stockholm Observatory, Saltsjobaden, Sweden 5 Stockholm Observatory, S-13336 Saltsjobaden, Sweden 3 Stockholms Observatorium, Saltsjobaden 2 Stockholm, Observatorium, Saltsjobaden, Sweden 2 Stockholm Observatory, Salsjobaden, Sweden 2 Stockholm Observatorium, Saltsjobaden, Sweden 1 Stockholms Observatorium,Saltsjobaden, Sweden 1 Stockholms Observatorium Saltsjobaden 1 Stockholm Observatory, Sweden 1 Stockholm Observatory, Stockholm, Sweden 1 Stockholm Observatory, Saltsjoebaden, Sweden 1 Stockholm Observatory, Saltsjobaden 1 Stockholm Observatory, S-133 36, Saltsjobaden, Sweden 1 Stockholm Observatory, S-133 36 Saltsjobaden, Sweden 85 37 Astronomiska Observatoriet, Uppsala, Sweden 171 Astronomiska Observatoriet, Uppsala, Sweden 46 Onsala Space Observatory, Onsala, Sweden 36 Onsala Rymdobservatorium, Onsala, Sweden 24 Astronomical Observatory, Uppsala, Sweden 20 Astronomiska Observatorium, Uppsala, Sweden 6 Uppsala Astronomical Observatory, Uppsala, Sweden 6 Onsala, Rymdobservatorium, Onsala, Sweden 4 Astronomical Observatory, Krakow, Poland 3 Astronomisk Observatorium, Brorfelde, Denmark 3 Astronomical Observatory, Padua, Italy 3 Astronomical Observatory, Istanbul, Turkey 2 Uppsala Observatory, Uppsala, 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 Onsala Ryndobservatorium, Onsala, 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 86 11 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 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 87 29 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 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 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 88 4 Carnegie Institution of Washington, Observatories, Pasadena, CA 82 Carnegie Institution of Washington, Observatories, Pasadena, CA 4 Carnegie Institution of Washington, Observatories, La Serena, Chile 1 Carnegie Institution, Observatories, Pasadena, CA 1 Carnegie Inst. of Washington, Observatories, Pasadena, CA 89 14 High Altitude Observatory, Boulder, Colo. 331 High Altitude Observatory, Boulder, CO 92 High Altitude Observatory, Boulder, Colo. 22 Ritter Observatory, Toledo, OH 17 Ritter Observatory, Toledo, Ohio 13 High Altitude Observatory 2 High Altitude Observatory, Boulder, CO, US 1 Sommers-Bausch Observatory, Boulder, CO 1 NOAA, Aeronomy Laboratory, Boulder, Colo. 1 Hight Altitude Observatory, Boulder, CO 1 High Altitude Observatory, Tucson, Ariz. 1 High Altitude Observatory, Pasadena, Calif. 1 High Altitude Observatory, Boulder, Co 1 Fritz Peak Observatory, Boulder, Colo. 1 Big Bear Observatory, Pasadena, CA 90 22 Five College Radio Astronomy Observatory 183 Five College Radio Astronomy Observatory, Amherst, MA 59 Five College Radio Astronomy Observatory 22 National Radio Astronomy Observatory 18 Five College Radio Astronomy Observatory, Amherst 14 Five College Radio Astronomy Observatory, Amherst, Mass. 8 Owens Valley Radio Observatory 6 Radio Astronomy Observatory 5 Flower and Cook Observatory 3 National Astronomical Observatory 2 Space Research Astronomical Observatory 2 Glenlea Astronomical Observatory 2 Five College Radio Observatory, Amherst, MA 2 Five College Radio Observatory 1 Uppsala Astronomical Observatory 1 Torun Radio Astronomy Observatory, Poland 1 National Radioastronomy Observatory 1 Korea Astronomy Observatory 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 Astronomy Observatory, Amherst, MA 1 Beijing Astronomical Observatory 91 136 Osservatorio Astrofisico, Asiago, Italy 290 Arcetri, Osservatorio Astrofisico, Florence, 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 82 Padova, Osservatorio Astronomico, Padua, Italy 74 Osservatorio Astrofisico, Catania, Italy 60 Trieste, Osservatorio Astronomico, Trieste, Italy 59 Observatorio Astronomico, La Plata, Argentina 53 Observatorio Astronomico, Cordoba, Argentina 46 Osservatorio Astronomico, Rome, Italy 46 Osservatorio Astronomico, Palermo, Italy 33 Osservatorio Astrofisico di Arcetri, Firenze, Italy 26 Trieste, Osservatorio Astronomico, Italy 25 Osservatorio Astronomico di Brera, Milano, Italy 23 Osservatorio Astronomico 21 Osservatorio Astrofisico 21 Obserwatorium Astronomiczne, Krakow, Poland 19 Bologna, Osservatorio Astronomico, Italy 19 Asiago, Osservatorio Astrofisico, Asiago, Italy 18 Catania, Osservatorio Astrofisico, Italy 17 Osservatorio Astrofisico, Asiago 15 Osservatorio Astronomico Collurania, Teramo, Italy 14 Catania, Osservatorio Astrofisico, Catania, Italy 13 Palermo, Osservatorio Astronomico, Palermo, Italy 12 Observatorio Astronomico, La Plata 11 Palermo, Osservatorio Astronomico, Italy 11 Osservatorio Astronomico, Turin, Italy 10 Osservatorio Astronomico, Padova, Italy 10 Osservatorio Astronomico, Italy 10 Arcetri, Osservatorio Astrofisico, Arcetri, 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 8 Observatorio Astronomico 7 Osservatorio Astronomico, Merate, Italy 7 Observatorio Astronomico Nacional 6 Osservatorio di Catania, Catania, Italy 6 Osservatorio Astronomico, Padua 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 Astrofisico di Catania, Catania, Italy 5 Observatorium Astronomiczne, Warsaw, Poland 5 Observatorio Astronomico, Santiago de Compostela 5 Observatorio Astronomico, Bogota, Colombia 5 Asiago, Osservatorio Astrofisico, Padua, Italy 5 Asiago, Osservatorio Astrofisico, Italy 5 Arcetri, Osservatorio Astronomico, Florence, 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 4 Observatorio Astronomico Nacional, Ensenada 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 Bologna, Italy 3 Osservatorio Astronomico de Brera, Milano, Italy 3 Osservatorio Astrofisica di Catania, Catania, Italy 3 Observatorium Astronomiczne, Krakow, Poland 3 Observatorio Astronomico, Laprida, Argentina 3 Collurania, Osservatorio Astronomico, Teramo, 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 Roma, Italy 2 Osservatorio Astronomico de Brera, Milan, Italy 2 Osservatorio Astrofisico, Catania 2 Osservatorio Astrofisico, Arcetri, Italy 2 Osservatorio Astrofisco di Catania, Catania, Italy 2 Observatorio Astronomico, Santiago, Chile 2 Observatorio Astronomico, Cordoba 2 Brera, Osservatorio Astronomico, Milan, Italy 2 Asiago, Osservatorio Astronomico, Padua, Italy 2 Asiago, Osservatorio Astronomico, Asiago, Italy 2 Arcetri, Osservatorio Astrofisico, Italy 2 Arcetri Osservatorio Astrofisico, Florence, Italy 1 Trieste, Osservatorio Astronoico, Trieste, Italy 1 Torino Osservatorio Astronomico, Turin, Italy 1 Teramo, Osservatorio Astronomico, Teramo, Italy 1 Specola Astronomica, Lodi, 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 Capodimonte, Napoli, Italy 1 Osservatorio di Brera, Milan, Italy 1 Osservatorio San Vittore, Bologna, Italy 1 Osservatorio Collurania, Teramo, Italy 1 Osservatorio Astronomico, Milan, Italy 1 Osservatorio Astronomico, Frascati, Italy 1 Osservatorio Astronomico, Cordoba, Argentina 1 Osservatorio Astronomico di Padova, Italy 1 Osservatorio Astronomico di Capodimonte, Italy 1 Osservatorio Astronomico di Brera, Merate 1 Osservatorio Astronomico de Brera, Merate, Italy 1 Osservatorio Astronomico Collurania, Teramo 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 Observatorium Astronomiczny, Warsaw, Poland 1 Observatorium Astronomiczne, Torun, Poland 1 Observatorio de Astronomia, Brazil 1 Observatorio Astronomico, San Juan, Argentina 1 Observatorio Astronomico, Bogota, Columbia 1 Observatorio Astronomico de Cerro Calan 1 Observatorio Astronomico Felix Aguilar 1 Observatorio Astrofisico di Brera, Milano, Italy 1 Napoli, Osservatorio Astronomico, Naples, Italy 1 Merate, Osservatorio Astronomico, Merate, Italy 1 Laboratorio de Astrofisica, Madrid, Spain 1 Istituto e Osservatorio Astronomico, Palermo, Italy 1 Asiago, Osservatorio Astronomico, Italy 1 Arcetri, Observatorio Astrofisico, Florence, Italy 92 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 93 38 CNR, Istituto di Radioastronomia, Bologna, Italy 223 CNR, Istituto di Radioastronomia, Bologna, Italy 132 CNR, Istituto di Fisica Cosmica, Milan, Italy 44 CNR, Laboratorio di Radioastronomia, Bologna, Italy 40 CNR, Istituto di Radioastronomia 22 CNR, Ist. di Radioastronomia, Bologna, Italy 13 Istituto di Radioastronomia del CNR, Bologna, Italy 12 CNR, Ist. di Fisica Cosmica, Milan, Italy 11 CNR, Istituto di Radioastronomia, Italy 9 CNR, Istituto di Cosmogeofisica, Turin, Italy 6 CNR, Istituto de Radioastronomia, Bologna, Italy 5 CNR, Istituto di Cosmo-Geofisica, Turin, Italy 4 CNR, Istituto di Radioastronomia, Bologna 4 CNR, Ist. di Radioastronomia, Italy 3 Istituto di Radioastronomia, Bologna, Italy 3 CNR, Ist. di Radioastronomia, Noto, Italy 2 Istituto di Radioastronomia C.N.R., Bologna, Italy 2 Instituto de Radioastronmia del CNR, Bologna, Italy 2 Dipartimento di Astronomia, Bologna, Italy 1 Univ. and Inst. di Radioastronomia CNR, Bologna, Italy 1 Istituto di Radioastronomia-C.N.R., Bologna, Italy 1 Istituto di Fisica A. Righi, Bologna, Italy 1 Istituto de Radioastronomia, Bologna, Italy 1 Inst. di Radioastronomia, Bologna, Italy 1 Inst. di Radioastron. del CNR, Bologna, Italy 1 Dipartimento d Astronomia, Bologna, Italy 1 Dipart. di Astronomia, Bologna, Italy 1 CNRS, Istituto di Radioastronomia 1 CNR, Laboratorio di Radioastronomia, Bologna 1 CNR, Laboratorio di Radio Astronomia, Bologna, Italy 1 CNR, Istituto di Radioastronomio, Bologna, Italy 1 CNR, Istituto di Radioastronomia, Noto 1 CNR, Istituto di Radioastronimia, Bologna, Italy 1 CNR, Istituto di Radio Astronomia, Bologna, Italy 1 CNR, Istituto di Radiastronomia, Bologna, Italy 1 CNR, Istituto di Fisica Cosmica, Italy 1 CNR, Istituto di Cosmo-geofisica, Turin, Italy 1 CNR, Ist. di Radioastronomia, Medicina, Italy 1 Arcetri, Istituto di Astronomia, Florence, Italy 94 41 Osservatorio Astronomico di Torino, Pino Torinese, Italy 85 Osservatorio Astronomico di Capodimonte, Naples, Italy 80 Osservatorio Astronomico di Brera, Merate, Italy 54 Osservatorio Astronomico di Brera, Milan, Italy 39 Torino, Osservatorio Astronomico, Pino Torinese, Italy 26 Osservatorio Astronomico di Monte Mario, Rome, 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 14 Osservatorio Astronomico di Bologna, Bologna, Italy 12 Osservatorio Astronomico su Monte Mario, Rome, Italy 6 Osservatorio Astronomico di Capodimonte, Napoli, Italy 5 Osservatorio Astronomico di Roma, Monteporzio, Italy 4 Osservatorio Astronomico di Torino, Torino, Italy 4 Osservatorio Astronomico di Torino, I-10025, Pino Torinese, Italy 3 Osservatario Astronomico di Bologna, Bologna, Italy 2 Osservatorio di Torino, 10025 Pino Torinese, 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, 00040 Monte Porzio, Italy 2 Osservatorio Astronomico di Collurania, I-64100 Teramo, Italy 2 Osservatorio Astronomico di Brera-Merate, Milano, Italy 2 Osservatorio Astronomica di Capodimonte, Napoli, Italy 2 Osservatorio Astron. di Torino, Pino Torinese, Italy 2 Observatorio Astronomico di Collurania, Teramo, Italy 1 Osservatorio di Torino, Pino Torinese, Italy 1 Osservatorio Astronomico, Pino Torinese, Italy 1 Osservatorio Astronomico di Trieste, Trieste, IT 1 Osservatorio Astronomico di Torino, I-10025 Pino Torinese, Italy 1 Osservatorio Astronomico di Torino, I-10025 Pino Torinese (TO), Italy 1 Osservatorio Astronomico di Pavdova, Padova, Italy 1 Osservatorio Astronomico di Padova, Sede di Asiago, Italy 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 Astronomica di Brera, Merate, Italy 1 Obsservatorio Astronomico di Trieste, Trieste, Italy 1 Observatorio Astronomico di Trieste, Trieste, Italy 1 Observatario Astronomico di Padova, Padova, Italy 95 32 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 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 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 96 18 Observatoire du Mont Megantic, Quebec, 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 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 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 Megantique, Quebec, Canada 1 Observatoire Astronomique du Mont Megantic Quebec, Canada 97 36 CNR, Ist. 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 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 Spaziale, Rome 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 Inst. di Astrofisica Spaziale del Consiglio, Frascati, 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 Plasma Spazio, Frascati, Italy 1 CNR Istituto di Astrofisica Spaziale, Frascati, Italy 98 27 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 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 Astrofisico Brasileiro, Rio de Janeiro, Brazil 1 CNPq, Rio de Janeiro, Brazil 99 15 Lancashire Polytechnic, Preston, England 75 Lancashire Polytechnic, Preston, England 36 Hatfield Polytechnic, England 13 Preston Polytechnic, Preston, England 4 Lancashire Polytechnic, Preston 3 Preston Polytechnic, Preston, Lancs., England 3 Hatfield Polytechnic, Hatfield, England 2 Preston Polytechnic, Preston 2 Lancashire Polytechnic, Preston, United Kingdom 1 Thames Polytechnic, London, England 1 Teesside Polytechnic, Middlesborough, England 1 Manchester Polytechnic, United Kingdom 1 London Polytechnic, London, England 1 Lancashire Polytechnic, Preston, Lancs., England 1 Lancashire Polytechnic Univ., Preston, United Kingdom 1 Hatfield Polytechnic Observatory, England 100 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 101 24 Observatoire de la Cote d'Azur, Nice, France 53 Observatoire de la Cote d'Azur, Nice, 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 9 Observatoire de Bordeaux, Floirac, France 7 Observatoire de la Cote-d'Azur, Nice, France 3 Observatorie de Marseille, Marseille, France 3 Observatoire de Nice, Nice, France 3 Observatoire de Lyon, St. Genis Laval, France 3 Observatoire de Lyon, St-Genis-Laval, France 2 Observatorie de Paris-Meudon, Meudon, France 2 Observatorie de Haute-Provence, St. Michel, France 2 Observatoire de la Cote d'Azur, Saint-Vallier-de-Thiey, France 2 Observatoire de Nice O.C.A., Nice, France 2 Observatoire de Lyon, St. Genis-Laval, France 2 Observatoire de Haute-Provence, St Michel, France 2 Observatoire de Haute-Provence, France 1 Observatorie de Paris-Meudon, Paris, France 1 Observatoire de Paris-Meudon, Paris, France 1 Observatoire de Paris, Meudon Principal, France 1 Observatoire de Paris, France 1 Observatoire de Cote d'Azur, Nice, France 1 Observatoire de Calern/OCA, France 102 39 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 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, 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, 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 103 13 Instituto de Radioastronomia Milimetrica, Granada, Spain 70 Instituto de Radioastronomia Milimetrica, Granada, Spain 17 Inst. de Radioastronomia Milimetrica, Granada, Spain 14 Institut de Radio Astronomie Millimetrique, Grenoble, France 9 Instituto de Radioastronomia Milimetrica, Granada 7 Institut de Radioastronomie Millimetrique, Grenoble, France 3 Inst. de Radioastronomia Milimetrica, Granada 2 Instituto de Radioastronomia, Milimetrica, Granada, Spain 2 Instituto de Radioastronomia Millimetrica, Granada, 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 104 39 Russian Academy of Sciences, Moscow, Russia 72 Russian Academy of Sciences, 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 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 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 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 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 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 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 Scienc, Moscow, Russia 1 Russian Academy Sciences, Moscow, Russia 1 Latvian Academy of Sciences, Riga, Latvia 1 Hungarian Academy of Sciences, Gyula, Hungary 1 Chinese Academy of Sciences, Nanjing, China 1 Astro-Space Center, Moscow, Russia 105 19 U.S. Navy, E. O. Hulburt Center for Space Research, Washington, D.C. 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. 4 U.S. Navy, E.O. Hulburt Center for Space Research, Washington, D.C. 4 E. O. Hulburt Center for Space Research, Washington, DC 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 106 24 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 3 Kiso Observatory, Mitaka, 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 2 Kiso Observatory, Mitake, 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 Dodaira Observatory, Mitaka, Japan 107 91 Max-Planck-Institut fuer Extraterrestrische Physik, Garching, Germany 185 Max-Planck-Inst. fuer Extraterrestrische Physik, Garching, Germany 82 Max-Planck-Institut fuer Extraterrestrische Physik, Garching, Federal Republic of 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 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. fuer Extraterrestrische Physik, Garching, Germany 5 Max Planck Inst. fuer Extraterrestrische Physik, Garching, 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 fur Extraterrestrische Physik, 85740 Garching bei Munchen, 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 Physik und Astrophysik, 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, 85740 Garching bei Munchen, 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 extraterrestrische Physik, Federal Republic of Germany 1 Max-Planck-Institut fuer extraterrestrische Physik 1 Max-Planck-Institut fuer Physik und Astrophysik, Garching, Germany 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 Extraterrestrische Physik 1 Max-Planck-Institut fuer Extraterrestriche Physik, Garching, West Germany 1 Max-Planck-Institut fuer Extraerrestrische Physik, Garching, Germany 1 Max-Planck-Institut fuer Astrophsik, 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, 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 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 Extraterrestricshe Physik, Garching, Germany 1 MPI fuer Extraterrestriche Physik, Garching, Germany 108 10 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 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 109 38 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 48 National Radio Astronomy Observatory, Socorro, N. Mex. 31 National Radio Astronomy Observatory, Charlottesville, VA, US 20 National Radio Astronomy Observatory, Charlottesville 14 Leander McCormick Observatory, Charlottesville, VA 5 National Radio Astronomy Observatory, Green Bank, WV, US 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 1 Natitonal Radio Astronomy Observatory, Charlottesville, VA 1 National Radio Astronomy, Observatory, Socorro, NM 1 National Radio Astronomy Observatory, Socorro, New Mexico, US 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 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 110 13 South African Astronomical Observatory, Observatory, Republic of South Africa 323 South African Astronomical Observatory, Observatory, Republic of 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 2 South African Astronomical Observatory, Republic of 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, 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 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 111 10 Universitetets Astronomiske Observatorium, Copenhagen, Denmark 88 Universitetets Astronomiske Observatorium, Copenhagen, Denmark 85 Universitetets Astronomiske Observatorium, Tollose, Denmark 5 Universitets Astronomiske Observatorium, Copenhagen, Denmark 1 Universitets Astronomiske Observatorium, Tollose, Denmark 1 Universitetets, Astronomiske Observatorium, Copenhagen, Denmark 1 Universitetets Astronomiske Observatorium, Kopenhagen, Denmark 1 Universitetes Astronomiske Observatorium, Copenhagen, Denmark 1 Universitet Astronomiske Observatorium, Copenhagen, Denmark 1 Kobenhavns Universitets Astronomiske Observatorium, Copenhagen, Denmark 1 Astronomiske Observatorium, Copenhagen, Denmark 112 12 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 113 10 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 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 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 114 11 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 24 Kiel, Universitaet, Institut fuer Theoretische Physik und Sternwarte, Federal Republic of Germany 21 Kiel, Universitaet, Institut fuer theoretische Physik und Sternwarte, 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, Institut fuer Theoretische Physik und Sternwarte, Federal Republic of Germany 1 Kiel Universitaet, Institut fuer Theoretische Physik und Sternwarte, Kiel, West Germany 115 17 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 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, Bangalore 560 034, India 2 Herzberg Institute of Astrophysics, Ottawa, Canada 1 Indian Institute of Technology, Bangalore, 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 116 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 117 9 California Institute of Technology, Jet Propulsion Laboratory, Pasadena, CA 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. 118 31 Muenchen, Universitaet, Munich, Federal Republic of 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 21 Universitaets-Sternwarte, Munich, Federal Republic of Germany 19 Wuerzburg, Universitaet, Federal Republic of Germany 18 Kiel, Universitaet, Federal Republic of Germany 18 Bonn, Universitaet, Sternwarte, Federal Republic of Germany 6 Muenchen, Universitaets-Sternwarte, Munich, Federal Republic of Germany 6 Bonn, Universitaets-Sternwarte, Federal Republic of Germany 4 Hannover, Universitaet, Hanover, Federal Republic of Germany 4 Goettingen, Universitaets-Sternwarte, Federal Republic of Germany 3 Muenchen, Technische Universitaet, Munich, Federal Republic of Germany 2 Mainz, Universitaet, Federal Republic of Germany 2 Koeln, Universitaet, Federal Republic of Germany 2 Goettingen, Universitaet, Federal Republic of Germany 2 Duesseldorf, Universitaet, Federal Republic of Germany 2 Bayreuth, Universitaet, Federal Republic of Germany 1 Siegen, Universitaet-Gesamthochschule, Federal Republic of Germany 1 Muenchen, Universitaetssternwarte, Munich, Federal Republic of Germany 1 Muenchen, Universitaet, Sternwarte, Munich, Federal Republic of Germany 1 MBB GmbH, Munich, Federal Republic of Germany 1 Leipzig, Universitaet, Federal Republic of Germany 1 Kiel, Universitaets-Sternwarte, 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 119 19 Max-Planck-Institut fuer Physik und Astrophysik, Munich, West Germany 292 Max-Planck-Institut fuer Physik und Astrophysik, Garching, West Germany 84 Max-Planck-Inst. fuer Physik und Astrophysik, Garching, Germany 70 Max-Planck-Institut fuer Physik und Astrophysik, Munich, West Germany 8 Max-Planck-Institut fuer Physik und Astrophysik, Garching 7 Max-Planck-Institut fuer Astrophysik, Munich, West Germany 4 Max-Planck-Institut fuer Physik and Astrophysik, Garching, West Germany 3 Max-Planck-Institut fuer Physik und Astrophysik, Munich, Federal Republic of Germany 2 Max-Planck-Institut fur Physik und Astrophysik, Munich, West Germany 2 Max-Planck-Institut fur Physik und Astrophysik, Garching, West Germany 2 Max-Planck-Institut fuer Astrophysik, Muenchen, Germany 1 Max-Planck-Institute fuer Physik und Astrophysik, Garching, West Germany 1 Max-Planck-Institut fur Physik and Astrophysik, Garching, West Germany 1 Max-Planck-Institut fuer Physik und Astrophysik, Muenchen, Germany 1 Max-Planck-Institut fuer Physik und Astrophysik, Federal Republic of Germany 1 Max-Planck-Institut fuer Physik und Astrophysik Garching, West Germany 1 Max-Planck-Institut fuer Physik and Astrophysik, Munich, West Germany 1 Max-Planck-Institut fuer Astrophysik, Muenich, West Germany 1 Max-Planck-Inst. fuer Physik und Astrophysik, Munich, Germany 1 Max-Planck Institut fuer Physik und Astrophysik, Garching, West Germany 120 66 California, University, Los Alamos, N. Mex. 418 California, University, Berkeley, Calif. 346 California, University, Berkeley, CA 267 California, University, Los Angeles 162 California, University, La Jolla 139 California, University, Los Angeles, CA 129 California, University, La Jolla, Calif. 125 Columbia University, New York, N.Y. 118 California, University, Los Angeles, Calif. 112 California, University, La Jolla, CA 86 California, University, Los Alamos, N. Mex. 68 California, University, Santa Barbara 65 California, University, Santa Cruz 64 California, University, San Diego, Calif. 45 California Univ., Los Angeles 36 California, University, Livermore, Calif. 34 California, University, Livermore, CA 31 California, University, San Diego 31 California, University, Livermore 23 California, University, Santa Barbara, CA 22 New Mexico State University, Las Cruces, N. Mex. 21 California, University, Irvine, Calif. 20 California, University, Santa Cruz, Calif. 18 California, University, Santa Barbara, Calif. 17 California, University, Irvine, CA 16 California, University, Santa Cruz, CA 15 California, University, San Diego, CA 11 Southern California, University, Los Angeles, Calif. 7 California, University, Berkeley and Livermore 5 California, University, Riverside, Calif. 5 California University, Berkeley, Calif. 4 California, University, Los Alamos, NM 4 California, University, Davis, Calif. 4 California University, Berkeley, CA 3 Nevada, University, Las Vegas, Nev. 3 EG & G, Inc., Los Alamos, N. Mex. 3 California, University, Los Alamos 3 Calabria, Universita, Cosenza, Italy 2 California, University, Riverside, CA 2 California, University, Davis, CA 2 California, University, Davis and Livermore 2 California, University, Berkeley and Irvine 2 California University, Santa Cruz, Calif. 2 California State University, Long Beach, CA, US 1 california, University, Berkeley, Calif. 1 Illinois, University, Chicago, Ill. 1 Columbia, University, New York, N.Y. 1 California, Unversity, Livermore, CA 1 California, Unversity, Berkeley, CA 1 California, University, Observatories, Santa Cruz 1 California, University, Los Angeles, Calif 1 California, University, Livermore and Davis 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, Berkely, Calif. 1 California, University, Berkeley and Los Angeles 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 Univ., Los Angeles, CA, US 1 California State University, Los Angeles, Calif. 1 California State University, Long Beach, Calif. 121 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 122 11 Centro Astronomico de Yebes, Guadalajara, Spain 72 Centro Astronomico de Yebes, Guadalajara, Spain 51 Observatorio Astronomico Nacional, Guadalajara, Spain 21 Centro Astronomico Hispano-Aleman, Almeria, Spain 4 Centro Astronomico de Yebes, Guadalajara 3 Centro Astronomico de Yebes (IGN), Guadalajara, Spain 2 Yebes, Centro Astronomico, Guadalajara, Spain 1 Observatorio Astrononomico Nacional, Guadalajara, Spain 1 Observatorie Astronomico Nacional, Guadalajara, Spain 1 Centro Astronomico de Yebes, Guadalahara, Spain 1 Centro Astronomico Hispano Aleman, Spain 1 Centro Astronomico Hispano Aleman, Almeria, Spain 123 11 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 Inst. for Theoretical Astrophysics, Toronto, Ontario, Canada 1 Canadian Institute for Theoretical Astrophysics, University, Toronto, Canada 1 Canadian Institute for Theoretical Astrophysics, Toronto 1 Canadian Inst. for Theoretical Astrophysics, Toronto 124 10 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 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 Cientifica s, Instituto de Astrofisica de Canarias, La Lag una, Spain 125 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 126 24 Johns Hopkins University, Baltimore, Md. 208 Johns Hopkins University, Baltimore, MD 105 Johns Hopkins Univ., Baltimore, MD, US 59 Johns Hopkins Univ., Baltimore, MD 54 Johns Hopkins University 48 Johns Hopkins University, Baltimore, Md. 41 Johns Hopkins University, Baltimore, MD, US 24 Brandeis University, Waltham, MA 19 Johns Hopkins University, Baltimore, Maryland, US 17 Johns Hopkins University, Laurel, MD 17 George Mason University, Fairfax, Va. 12 Brandeis University, Waltham, Mass. 5 The Johns Hopkins University, Baltimore, MD, US 4 The Johns Hopkins Univ., Baltimore, MD, US 4 Clemson University, Clemson, S.C. 3 Maryland, University, Baltimore, MD 2 Wisconsin, University, Eau Claire, Wis. 2 Johns Hopkins University, Laurel, Md. 2 Johns Hopkins University, Baltimore 1 the Johns Hopkins University, Baltimore, MD, US 1 Morgan State University, Baltimore, Md. 1 Johns Hopkins University, Laurel, MD, US 1 Johns Hopkins University, Baltimore, MA 1 Johns Hopkins Univ., Laurel, MD 1 Brandeis University, Waltham, MD 127 83 Leiden, Sterrewacht, 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 Groningen, State University, Netherlands 39 Amsterdam Univ., Netherlands 26 Leiden Observatory, Leiden, Netherlands 25 Utrecht State Univ., Netherlands 25 Leiden Observatory, Netherlands 24 SRON-Leiden, Leiden, Netherlands 23 ASTRON, Dwingeloo, Netherlands 19 SRON, Utrecht, Netherlands 14 Radiosterrenwacht, Dwingeloo, Netherlands 12 SRON, Groningen, Netherlands 9 Kapteyn Sterrenwacht, Roden, Netherlands 9 ASTRON, Amsterdam, Netherlands 8 Leiden, Observatory, Netherlands 7 Utrecht Univ., 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. of Utrecht, Utrecht, Netherlands 4 Sterrewacht, Leiden, Netherlands 4 Sterrewacht Sonnenborgh 4 SRON-Utrecht, Utrecht, Netherlands 4 Leiden State Univ., Netherlands 3 Utrecht, Sterrewacht, Utrecht, Netherlands 3 Leiden Univ., Netherlands 3 Helsinki, Sterrewacht, Finland 3 Fokker, Schiphol, Netherlands 2 Universiteit Utrecht, Utrecht, Netherlands 2 SRON, Netherlands 2 Radio Sterrewacht, Westerbork, Netherlands 2 Radio Sterrewacht, Dwingeloo, Netherlands 2 Leiden Sterrewacht, Leiden, Netherlands 2 Kapteyn Sterrewacht, 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 Technical Univ., Netherlands 2 CHEAF, Amsterdam, Netherlands 1 Utrecht, Rijksuniv., Netherlands 1 TWI, Delft, Netherlands 1 Sterrewacht Leiden, Netherlands 1 SRON-Utrecht, Utrecht, The Netherlands 1 Radio Sterrenwacht, Westerbork, 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 University, Netherlands 1 Leiden Univ., Leiden, Netherlands 1 Leiden Sterrewacht, Netherlands 1 Leiden Sterrenwacht, Leiden, Netherlands 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 Kapetyn Observatory, Netherlands 1 Groningen, Rijksuniv., Netherlands 1 Groningen Univ., Netherlands 1 Fokker, Schipol, Netherlands 1 FOM, Nieuwegein, Netherlands 1 ESTEC, Noordwijk, The Netherlands 1 ESTEC, Noordwijk, Netheralnds 1 ESTEC, Noordwijk, Nertherlands 1 Dwingeloo, Radiosterrewacht, Netherlands 1 Dwingeloo Radiosterrenwacht, Netherlands 1 Dutch Meteor Society, Netherlands 1 Comprimo, Amsterdam, Netherlands 1 CERN, Geneve, Switzerland 128 19 ESA, Astronomy Div., Noordwijk, Netherlands 95 EXOSAT Observatory, Noordwijk, Netherlands 75 ESA, Space Science Dept., Noordwijk, Netherlands 38 ESA, Astronomy Div., Noordwijk, Netherlands 34 ESA, Astrophysics Div., Noordwijk, Netherlands 21 ESA, Astronomy Div., Madrid, Spain 4 ISO Observatory, Noordwijk, Netherlands 3 European Space Agency, Noordwijk, Netherlands 3 ESTEC, Astrophysics Div., Noordwijk, Netherlands 3 ESA/ESTEC, Noordwijk, Netherlands 3 ESA, Space Science Div., Noordwijk, Netherlands 2 ESTEC, Space Science Dept., Noordwijk, Netherlands 1 Space Science Dept., Noordwijk, The Netherlands 1 EXOSAT Observatory, Noordwijk, The Netherlands 1 EXOSAT Observatory, Noordwijik, Netherlands 1 ESA/ESTEC, Noordwijk, The Netherlands 1 ESA, Space Science Dept., Nordwijk, Netherlands 1 ESA, Astronomy Section, Noordwijk, Netherlands 1 ESA, Astronomy Div. Noordwijk, Netherlands 1 ESA Space Sciences Div., Noordwijk, Netherlands 129 60 Universidad de Chile, Santiago, Chile 90 Universidad de Chile, Santiago 53 Universidad de Chile, Santiago, Chile 33 ESO, Santiago, Chile 26 Universita di Padova, Padova, Italy 17 Univ. de Chile, Santiago 15 Universidad de Cantabria, Santander, Spain 15 Ministerio de Educacion de Chile, Santiago, Chile 14 Universidade de Sao Paulo, Sao Paulo, Brazil 11 Universite de Liege, Liege, Belgium 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 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 P. Univ. Catolica de Chile, Santiago, Chile 5 Instituto Isaac Newton, Santiago, Chile 4 Universita di Palermo, Palermo, Italy 4 Pontificia Univ. Catolica de Chile, Santiago, Chile 4 Ministerio de Education de Chile, Santiago, Chile 3 Universitat de Valencia, Valencia, Spain 3 Universidad de Puerto Rico, San Juan, PR 3 Pontificia Univ. Catolica, Santiago, Chile 2 Universite de Nice, Nice, France 2 Universita di Pavia, Pavia, Italy 2 Universita di Lecce, Napoli, Italy 2 Universidad de Chile, Santiago de Chile, Chile 2 Universidad Autonoma, Madrid, Spain 2 Univ.de Chile, Casilla, Santiago, Chile 2 Pontificia Universidad Catolica de Chile, Santiago, Chile 2 Chili Univ., Santiago, Chile 1 University of Crete, Crete, Greece 1 Universite Laval, Sainte Foy, Canada 1 Universita di Genova, Genova, Italy 1 Universita dell'Aquila, Coppito, Italy 1 Universita dell'Aquila, Aquila, Italy 1 Universita degli Studi, Rome, Italy 1 Universidat de Chile, Santiago 1 Universidad de los Andes 1 Universidad de Puerto Rico, Mayaguez 1 Universidad de Oriente, Cumana, Venezuela 1 Universidad de Cantabria, Santander 1 Universidad de Cantabria 1 Universidad Tecnica, Valparaiso, Chile 1 Universidad Tecnica del Estado, Santiago, Chile 1 Universidad Mackenzie, Sao Paulo, Brazil 1 Universidad Catolica de Chile, Casilla 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 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 130 17 Sterrewacht Sonnenborgh, Utrecht, Netherlands 73 Sterrewacht Sonnenborgh, Utrecht, Netherlands 28 Sterrewacht Leiden, Leiden, Netherlands 12 Lab. for Space Research, Utrecht, Netherlands 7 Sterrewacht Leiden, Leiden, The Netherlands 4 Utrecht University, Utrecht, Netherlands 3 Utrecht Univ., Utrecht, Netherlands 3 Sterrwacht Leiden, Leiden, Netherlands 3 Sterrekundig Instituut, Utrecht, Netherlands 2 Sterrewacht, Sonnenborgh, Utrecht, Netherlands 2 Sterrewacht Sonnenborgh, Utrecht 2 Sterrenwacht Sonnenborgh, Utrecht, Netherlands 2 Sterrenkundig Inst., Utrecht, Netherlands 2 Astronomical Inst., Utrecht, Netherlands 1 Utrecht Observatory, Utrecht Netherlands 1 University of Utrecht, Utrecht, Netherlands 1 Sterrwacht Sonnenborgh, Utrecht, Nletherlands 1 Space Research Lab., Utrecht, Netherlands 131 35 North Carolina, University, Chapel Hill 71 North Carolina, University, Chapel Hill 22 North Carolina Univ., Chapel Hill 16 North Carolina State University, Raleigh 12 South Florida, University, Tampa, Fla. 11 South Florida, University, Tampa 10 Tokyo Metropolitan University, Japan 9 North Carolina, University, Chapel Hill, NC 8 North Carolina State Univ., Raleigh 6 South Carolina, University, Conway 6 South Carolina, University, Columbia 5 South Alabama, University, Mobile, AL 4 North Carolina, University, Greensboro 4 North Carolina, University, Asheville 4 North Carolina State University, Raleigh, NC, US 4 North Carolina State University, Raleigh, NC 3 Northern Colorado, University, Greeley, CO 3 North Carolina, University, Chapel Hill, N.C. 2 Western Carolina University, Cullowhee, NC 1 South Carolina, University, Lancaster 1 South Carolina, University, Columbia, S.C. 1 Northern Iran, University, Iran 1 Northern Iran, University, Babalsar, Iran 1 Northern Iowa, University, Cedar Falls, IA 1 Northern Colorado, University, Greely, CO 1 Northern Colorado, University, Greeley 1 North Carolina, University, Greensboro, NC 1 North Carolina, University, Asheville, NC 1 North Carolina Univ., Raleigh 1 North Carolina Univ., Chapel Hill, NC, US 1 North Carolina Central University, Durham, N.C. 1 North Caroliina, University, Chapel Hill, NC 1 North Alabama, University, Florence, AL 1 Loyola University, Chicago, Ill. 1 Delta College, University Center, MI 1 De Paul University, Chicago, Ill. 132 93 Arizona State Univ., Tempe, AZ, US 73 Ohio State Univ., Columbus, OH, US 63 Cornell Univ., Ithaca, NY, US 54 Ohio State Univ., Columbus 54 Arizona State Univ., Tempe, AZ, US 40 Columbia Univ., New York, NY, US 38 Roma I, Univ., Rome, Italy 37 Yale Univ., New Haven, CT, US 32 Arizona State Univ., Tempe 28 Ohio State University, Columbus, OH, US 26 Boston Univ., Boston, MA, US 23 California Univ., Berkeley, CA, US 20 Rice Univ., Houston, TX, US 20 Clemson Univ., Clemson, SC, US 16 Georgia State Univ., Atlanta 14 Texas Univ., Austin, TX, US 14 Moscow State Univ., Russia 12 Tennessee State Univ., Nashville, TN, US 12 Georgia State Univ., Atlanta, GA, US 11 Colorado Univ., Boulder, CO, US 10 Roma II, Univ., Rome, Italy 10 Brandeis Univ., Waltham, MA, US 9 Wisconsin Univ., Madison, WI, US 9 North Carolina State Univ., Raleigh, NC, US 9 Brigham Young Univ., Provo, UT, US 8 San Diego State Univ., San Diego, CA, US 8 Michigan State Univ., East Lansing 8 Louisiana State Univ., Baton Rouge 7 New Hampshire Univ., Durham, NH, US 7 Montana State Univ., Bozeman, MT, US 6 Moscow State Univ., Moscow, Russia 6 Montana State Univ., Bozeman 5 Washington Univ., Seattle, WA, US 5 Iowa State Univ., Ames, IA, US 5 Arizona State University, Tempe, Arizona, US 4 Wichita State Univ., Wichita, KS, US 4 Sonoma State Univ., Rohnert Park, CA, US 4 Notre Dame Univ., Notre Dame, IN, US 4 Georgia Univ., Athens, GA, US 4 Georgia State Univ., Atlanta, Georgia, US 4 California State Univ., Northridge, CA, US 4 Birmingham Univ., Birmingham, UK 3 Odessa State Univ., Odessa, Ukraine 3 Kiev State Univ., Ukraine 3 Drake Univ., Des Moines, IA, US 3 Colgate Univ., Hamilton, NY, US 3 California Univ., Irvine, CA, US 3 Arizona Univ., Tucson, AZ, US 3 Arizona State Uiversity, Tempe, AZ, US 2 Volgograd State Univ., Russia 2 Illinois Univ., Urbana, IL, US 2 Florida State Univ., Tallahassee 2 Clark Atlanta Univ., Atlanta, GA, US 2 Chicago Univ., Chicago, IL, US 2 Brigham Young Univ., Provo, UT 2 Ball State Univ., Muncie, IN, US 2 Arizona State University, Temple, Arizona, US 2 Arizona State Univ., Temple, AZ, US 2 Arizona State Univ., Phoenix, AZ, US 2 Appalachian State Univ., Boone, NC 2 Alabama Univ., Huntsville, AL, US 1 Widener Univ., Chester, PA, US 1 Washington State Univ., Pullman, WA, US 1 Washington St. Univ., Pullman, WA, US 1 Univ. Station, Laramie, WY, US 1 Tufts Univ., Medford, MA, US 1 Toledo Univ., Toledo, OH, US 1 Tennessee Sate Univ., Nashville, TN, US 1 Steward Univ., Tucson, AZ, US 1 San Jose State Univ., San Jose, CA, US 1 Pennsylvania State Univ., Erie, PA, US 1 Oklahoma State Univ., Stillwater, OK, US 1 New York State Univ., Cortland 1 Mississippi State Univ., MS, US 1 Millikin Univ., Decatur, IL, US 1 Michigan State Univ., E. Lansing, MI, US 1 Mankato State Univ., Mankato, MN, US 1 Maine Univ., Orono, ME, US 1 Londrina State Univ., Brazil 1 King Sejong Univ., Seoul, Korea 1 Jackson State Univ., Jackson, MS, US 1 Crete Univ., Crete, Greece 1 Colgate Univ., Hamilton, NY 1 Cleveland State Univ., Cleveland, OH, US 1 Chicago Univ., Urbana, IL, US 1 California State Univ., Long Beach 1 Brandeis Univ., Boston, MA, US 1 Boston, Univ., Boston, MA, US 1 Ball State University, Munice, IN, US 1 Arizona University, Tucson, Ariz. 1 Arizona Univ., Tempe, AZ, US 1 Arizona State Univ., Tempe, Arizona, US 1 Appalachian State Univ., Boone, NC, US 1 Alabama Univ., Tuscaloosa, AL, US 133 36 Computer Sciences Corp., Greenbelt, MD 56 Computer Sciences Corp., Greenbelt, MD 32 Computer Sciences Corp., Silver Spring, MD 30 Computer Sciences Corp., Baltimore, MD 30 Computer Sciences Corp. 20 Computer Sciences Corp., Silver Spring, Md. 13 Hughes STX Corp., Greenbelt, MD 10 ST Systems Corp., Greenbelt, MD 8 General Sciences Corp., Laurel, MD 6 Computer Sciences Corp., Greenbelt, Md. 5 NASA. USRA, STX Corp., Greenbelt, MD, US 5 Computer Sciences Corp., El Segundo, CA 5 Computer Sciences Corp., Astronomy Dept., Greenbelt, MD 4 Computer Sciences Corp., Silver Spring 4 Computer Sciences Corp., Lanham-Seabrook, MD, US 4 Computer Sciences Corp., Falls Church, VA 4 Compton Observatory, Greenbelt, MD 3 Computer Sciences Corp., Seabrook, MD 3 Computer Science Corp., Greenbelt, MD 2 Computer Sciences Corp., Beltsville, MD 2 Computer Science Corporation, Lanham, MD, US 1 SASC Technologies, Inc., Greenbelt, MD 1 Interferometrics, Inc., Greenbelt, MD 1 Interferometrics Inc., Greenbelt, MD 1 IUE Observatory, Greenbelt, MD 1 General Sciences Corp., Laurel, MD, US 1 General Sciences Corp., Greenbelt, MD, US 1 Computer Sciences Corporation, US 1 Computer Sciences Corp., Lanham, MD, US 1 Computer Sciences Corp., Lanham 1 Computer Sciences Corp., Greenbelt, MD, US 1 Computer Sciences Corp., Falls Church, Va. 1 Computer Sciences Corp., Baltimore, MD, US 1 Computer Sciences Corp., Astronomy Dept., Greenbelt, Md. 1 Computer Science Corp., Silver Spring, MD 1 Computer Science Corp., Baltimore, MD 1 Compton Science Support Center, Greenbelt, MD 134 24 NASA, Goddard Space Flight Center, Greebelt 1299 NASA, Goddard Space Flight Center, Greenbelt, MD 175 NASA, Goddard Space Flight Center, Greenbelt, Md. 82 NASA, Goddard Space Flight Center 73 NASA, Goddard Space Flight Center, Greenbelt 13 NASA Goddard Space Flight Center, Greenbelt, Maryland, US 8 NASA, Marshall Space Flight Center 4 NASA/Goddard Space Center, Greenbelt, MD, US 3 NASA/Goddard Space Flight Center, Greenbelt, Maryland, 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, Goddad Space Flight Center, Greenbelt 1 NASA Goddard Space Flight Center, Greenbelt, MD 135 21 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 Australian National Univ., Private Bag, Australia 4 Australian National University, Weston, Australia 3 New South Wales, University, Canberra, 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 Australian National University, Canberra 1 Australian National University, Australia 136 10 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 16 Queen Mary and Westfield College, London, UK 8 Queen Mary and Westfield Coll., London Univ., London, UK 3 Queen Mary and Westfield Coll., London, UK 2 University College, London, United Kingdom 2 Queen Mary and Westfield College, London 2 Queen Mary & Westfield College, London, England, UK 1 Queen Mary and Westfield College, London, England, UK 1 Queen Mary & Westfield College, London, UK 137 8 Observatoire Royal de Belgique, Brussels, Belgium 86 Observatoire Royal de Belgique, Brussels, Belgium 2 Observatoire Royal de Belgique, Uccle, 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 138 16 Technion - Israel Institute of Technology, Haifa 73 Technion - Israel Institute of Technology, Haifa 52 Technion - Israel Institute of Technology, Haifa, Israel 11 Technion - Israel Inst. of Technology, Haifa 8 New Jersey Institute of Technology, Newark 6 Tokyo Institute of Technology, Japan 4 Technion - Israel Institute of Technology 4 Israel Institute of Technology, Haifa, Israel 3 Technion-Israel Institute of Technology, Haifa, Israel 3 Technion Israel Institute of Technology, Haifa, Israel 2 Kanazawa Institute of Technology, Japan 1 Tokyo Institute of Techonology, Japan 1 Technion Israel Institute of Technology, Haifa 1 Technion - Israel Inst. of Technology 1 Rochester Institute of Technology, NY 1 Kanasawa Institute of Technology, Japan 1 Chiba Institute of Technology, Japan 139 45 Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, US 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. 60 Center for Astrophysics, Cambridge, MA, US 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 140 7 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 4 Akademiia Nauk SSSR, Institut Iadernykh Issledovanii, Moscow, USSR 1 Akademiia Nauk SSSR, Institut Radiotekhniki i Elektroniki, Moscow, USSR 1 Akademiia Nauk SSSR, Institut Fiziki Zemli, Moscow, USSR 1 AN SSSR, Institut Kosmicheskykh Issledovanii, Moscow, USSR 1 AN SSSR Institut Kosmicheskikh Issledovanii, Moscow, USSR 141 13 Manchester, Victoria University, Jodrell Bank, England 145 Manchester, Victoria University, Manchester, England 139 Manchester, Victoria University, Jodrell Bank, Ches., England 136 Manchester, Victoria University, Jodrell Bank, England 3 Manchester, Victoria University, United Kingdom 3 Manchester, Victoria University, Macclesfield, Ches., England 2 Manchester, Victoria, University, Jodrell Bank, Ches., England 2 Manchester, Victoria University, Manchester 2 Manchester, Victoria Univ., Jodrell Bank, United Kingdom 2 Manchester, University, Jodrell Bank, England 2 Manchester Victoria Univ., Jodrell Bank, United Kingdom 1 lManchester, Victoria University, Jodrell Bank, Ches., England 1 Manchester, Victoria University, Machester, England 1 Manchester, Victoria University, Jordell Bank, England 142 6 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 143 9 National Research Council, Herzberg Institute of Astrophysics, Ottawa, Canada 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 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, Hertzberg Institute of Astrophysics, Ottawa, Canada 144 7 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 145 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 146 12 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 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 Radiophysics Labs., Epping, NSW, Australia 147 20 Leiden, Rijksuniversiteit, Sterrewacht, Leiden, Netherlands 276 Leiden, Rijksuniversiteit, Sterrewacht, Netherlands 236 Leiden, Rijksuniversiteit, Sterrewacht, Leiden, Netherlands 6 Leiden, Rijksuniversiteit Sterrewacht, Leiden, Netherlands 4 Leiden Rijksuniversiteit, Sterrewacht, Netherlands 3 Leiden, Rijksuniversiteit Sterrewacht, Netherlands 2 Leiden, Rijksuniversitet, Sterrewacht, Leiden, Netherlands 2 Leiden, Rijksuniversiteit, Sterrenwacht, Leiden, Netherlands 2 Leiden Rijksuniversiteit, Sterrewacht, Leiden, Netherlands 1 Utrecht, Rijksuniversiteit, Sterrewacht, 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, Sterrewacht, West Germany 1 Leiden, Rijksuniversiteit, Sterrewacht, Leiden 1 Leiden, Rijksuniversiteit, Sterrenwacht, Netherlands 1 Leiden, Rijksuniversiteit, Sterewacht, Leiden, Netherlands 1 Leiden, Rijksuniversiteit, Huygens Laboratorium, Leiden, Netherlands 1 Leiden Rijksuniversiteit Sterrewacht, Netherlands 148 15 Groningen, Rijksuniversiteit, Groningen, Netherlands 364 Groningen, Rijksuniversiteit, Groningen, Netherlands 281 Groningen, Rijksuniversiteit, Netherlands 94 Utrecht, Rijksuniversiteit, Utrecht, Netherlands 50 Utrecht, Rijksuniversiteit, Netherlands 41 Leiden, Rijksuniversiteit, Leiden, Netherlands 5 Groningen Rijksuniversiteit, Groningen, Netherlands 4 Groningen, Rijksuniversiteit, Groningen 2 Groningen, Rijksuniversitet, Groningen, Netherlands 1 Utrecht, Rijksuniversitet, Utrecht, Netherlands 1 Utrecht Rijksuniversiteit, Utrecht, Netherlands 1 Groningen, Rijkuniversiteit, Groningen, Netherlands 1 Groningen, Rijksuniversteit, Groningen, Netherlands 1 Groningen, Rijksuniversitaet, Groningen, Netherlands 1 Groningen University, Groningen, Netherlands 1 Groningen State University, Groningen, Netherlands 149 21 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 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 150 13 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, Switzerland 1 Zuerich, Eidenoessische Technische Hochschule, Zurich, Switzerland 1 Zuerich Eidgenoessische Technische Hochchule, Zurich, Switzerland 1 Eidgenossische Technische Hochschule, Zurich, Switzerland 151 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