  89 CSIRO, Div. of Radiophysics, Epping, Australia
  75 ESA, Space Science Dept., Noordwijk, Netherlands
  70 Instituto de Radioastronomia Milimetrica, Granada, Spain
  57 Andalucia, Instituto de Astrofisica, Granada, Spain
  52 Dwingeloo, Radiosterrenwacht, Netherlands
  50 New Mexico Institute of Mining and Technology, Socorro
  47 Obserwatorium Astronomiczne, Warsaw, Poland
  41 Michigan State University, East Lansing, Mich.
  38 ESA, Astronomy Div., Noordwijk, Netherlands
  34 ESA, Astrophysics Div., Noordwijk, Netherlands
  33 Andalucia, Inst. de Astrofisica, Granada, Spain
  29 Canterbury, University, Christchurch, New Zealand
  28 Lab. for Space Research, Leiden, Netherlands
  28 Dwingeloo, Radiosterrenwacht, Dwingeloo, Netherlands
  24 Jet Propulsion Lab., Cal. Inst. of Tech., Pasadena, CA, US
  23 American Science and Engineering, Inc., Cambridge, Mass.
  22 Universite de Montreal, Montreal, Quebec, Canada
  22 National Optical Astronomy Observatories, La Serena, Chile
  22 NASA, Infrared Telescope Facility, Mauna Kea, HI
  22 CNR, Istituto di Fisica dello Spazio Interplanetario, Frascati, Italy
  22 Astronomisches Rechen-Institut, Heidelberg, Federal Republic of Germany
  21 Southern California, University, Los Angeles, CA
  21 Obserwatorium Astronomiczne, Krakow, Poland
  21 Centro Astronomico Hispano-Aleman, Almeria, Spain
  21 Atmospheric and Environmental Research, Inc., Cambridge, MA
  21 Anglo-Australian Observatory, PO Box 296, Epping, NSW 2121, Australia
  20 York University, Downsview, Ontario, Canada
  20 Observatorium Hoher List, Daun, Federal Republic of Germany
  20 Fermi National Accelerator Laboratory, Batavia, IL
  20 Eotvos Lorand Tudomanyegyetem, Budapest, Hungary
  20 Case Western Reserve University, Cleveland, OH
  20 California, University, Los Alamos Scientific Laboratory, Los Alamos, N. Mex.
  19 Kiel, Univ., Inst. fuer Theoretische Physik und Sternwarte, Germany
  19 Ceskoslovenska Akademie Ved, Astronomicky Ustav, Ondrejov, Czechoslovakia
  19 Bordeaux I, Universite, Observatoire, Floirac, Gironde, France
  18 Nationaal Instituut voor Kernfysica en Hoge Energie Fysica, Netherlands
  18 McMaster Univ., Hamilton, Ontario, Canada
  18 Dansk Rumforskningsinstitut, Lyngby, Denmark
  17 Specola Vaticana, Vatican City State
  17 Saint Mary's University, Halifax, Nova Scotia, Canada
  16 Physics Department, University of Durham, South Road, Durham DH1 3LE, UK
  16 Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, 85748 Garching, Germany
  16 International School for Advanced Studies, Trieste, Italy
  16 Fonds National de la Recherche Scientifique, Brussels, Belgium
  16 Carter Observatory, Wellington, New Zealand
  15 Westerbork, Radiosterrenwacht, Zwiggelte, Netherlands
  15 Sachs/Freeman Associates, Inc., Bowie, MD
  15 New Mexico Inst. of Mining and Technology, Socorro
  15 National Research Council of Canada, Herzberg Inst. of Astrophysics, Ottawa
  15 NASA, Ames Research Center, Theoretical and Planetary Studies Branch, Moffett Field, Calif.
  15 Middle East Technical University, Ankara, Turkey
  15 Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
  15 College of the Holy Cross, Worcester, MA
  15 Astrophysikalisches Institut Potsdam, Potsdam, Germany
  14 Sterrewacht Leiden, Postbus 9513, 2300 RA Leiden, The Netherlands
  14 Radiosterrenwacht, Dwingeloo, Netherlands
  14 New Mexico Institute of Mining and Technology, Socorro, N. Mex.
  14 Magyar Tudomanyos Akademia, Kozponti Fizikai Kutato Intezet, Budapest, Hungary
  14 Leander McCormick Observatory, Charlottesville, VA
  14 Kernforschungszentrum Karlsruhe GmbH, Federal Republic of Germany
  14 Instituto Nacional de Astrofisica, Optica y Electronica, Puebla, Mexico
  14 Athens, National Capodistrian University, Greece
  14 Astrophysics, Department of Physics, Keble Road, Oxford OX1 3RH, UK
  13 National Research Council of Canada, Ottawa, Ontario, Canada
  13 NASA, Goddard Space Flight Center, Theoretical Studies Group, Greenbelt, Md.
  13 Mount John University Observatory, Christchurch, New Zealand
  13 Leander McCormick Observatory, Charlottesville, Va.
  13 Instituto Nacional de Tecnica Aeroespacial, Torrejon de Ardoz, Spain
  13 Embry-Riddle Aeronautical University, Daytona Beach, FL
  13 Dipartimento di Astronomia, Universita di Padova, vicolo dell'Osservatorio 5, I-35122 Padova, Italy
  13 Czech Academy of Sciences, Astronomical Inst., Ondrejov, Czech Republic
  12 University of Calgary, Calgary, Alberta, Canada
  12 Royal Greenwich Observatory, Herstmonceux, East Sussex, England
  12 Royal Australian Air Force Academy, Melbourne, Australia
  12 Potchefstroom Univ., Potchefstroom, South Africa
  12 NASA. Jet Propulsion Lab., Pasadena, CA, US
  12 Institute for Molecular Science, Okazaki, Japan
  12 Inst. Astronomico e Geofisico, Sao Paulo, Brazil
  12 Imperial College of Science, Technology, and Medicine, London, United Kingdom
  12 Hartebeesthoek Radio Astronomy Observatory, Krugersdorp, Republic of South Africa
  12 Department of Pure and Applied Physics, The Queen's University of Belfast, Belfast BT7 1NN, UK
  12 Department of Physics and Astronomy, University of Wales, Cardiff CF2 3YB, UK
  12 Centre d'Etudes et de Recherches de la Machine-Outil, Saint-Martin-d'Heres, France
  12 Center for Particle Astrophysics, University of California, Berkeley, CA 94720, USA
  12 CEA, Centre d'Etudes de Bruyeres-le-Chatel, France
  12 Antwerpen, Rijksuniversitair Centrum, Antwerp, Belgium
  11 Univ. of Science and Technology of China, Hefei
  11 Research Centre for Theoretical Astrophysics, University of Sydney, NSW 2006, Australia
  11 Physics Department, University of Durham, South Road, Durham DH1 3LE
  11 Natsionalna Astronomicheska Observatoriia, Sofia, Bulgaria
  11 London, University College, Mullard Space Science Laboratory, Dorking, Surrey, England
  11 Konkoly Obszervatorium, Budapest, Hungary
  11 Darmstadt, Technische Hochschule, Darmstadt, West Germany
  11 CNR, Istituto di Fisica Cosmica e Informatica, Palermo, Italy
  11 Bowling Green State University, Bowling Green, Ohio
  11 Atomic Energy Research Establishment, Culham Laboratory, Abingdon, Oxon, England
  11 Astronomisches Rechen-Inst., Heidelberg, Germany
  10 Wyzsza Szkola Pedagogiczna, Opole, Poland
  10 Specola Vaticana, Castel Gandolfo, Vatican City State
  10 Queen's Univ. of Belfast, Belfast, N. Ireland, UK
  10 Missouri-Saint Louis, University, Saint Louis
  10 Leiden Southern Station, Broederstroom, Republic of South Africa
  10 Kernforschungszentrum Karlsruhe GmbH, Karlsruhe, West Germany
  10 Institute of Space and Astronautical Science, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229, Japan
  10 Department of Physics and Astronomy, University of Wales College of Cardiff, PO Box 913, Cardiff CF2 3YB, UK
  10 Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA
  10 Cooperative Institute for Research in Environmental Sciences, Boulder, CO
  10 Astrophysikalisches Inst. Potsdam, Potsdam, Germany
  10 American Association of Variable Star Observers, Cambridge, MA
   9 School of Physics, University of Sydney, NSW 2006, Australia
   9 Saint Mary's Univ., Halifax, Nova Scotia, Canada
   9 Sachs/Freeman Associates, Inc., Landover, MD
   9 Observatoire du Pic-du-Midi, Bagneres-de-Bigorre, France
   9 Nuffield Radio Astronomy Laboratories, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DL
   9 Middle East Technical Univ., Ankara, Turkey
   9 McDonald Observatory, Texas Univ., Austin, TX, US
   9 Lab. for Space Research, Groningen, Netherlands
   9 Kapteyn Sterrenwacht, Roden, Netherlands
   9 Instituto Astronomico e Geofisico, Sao Paulo, Brazil
   9 Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK
   9 Edinburgh, Royal Observatory, U.K. Schmidt Telescope Unit, Coonabarabran, New South Wales, Australia
   9 Department of Physics and Astronomy, University of Wales College of Cardiff, PO Box 913, Cardiff CF2 3YB
   9 Department of Physics and Astronomy, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218, USA
   9 Department of Astronomy, University of Texas, Austin, TX 78712, USA
   9 Chalmers Tekniska Hogskola, Goteborg, Sweden
   9 Ceskoslovenska Akademie Ved, Astronomicky Ustav, Prague, Czechoslovakia
   9 California Association for Research in Astronomy, Kamuela, HI, US
   9 CNRS, Institut d'Astrophysique Spatiale, Verrieres-le-Buisson, France
   9 Astronomy Unit, Queen Mary and Westfield College, University of London, Mile End Road, London E1 4NS, UK
   9 Astronomy Centre, University of Sussex, Falmer, Brighton BN1 9QH
   9 Astrofizicheskaia Observatoriia, Tartu, Estonian SSR
   8 University of Maryland, College Park, Maryland, US
   8 University of Manchester, NRAL, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK
   8 Steward Observatory, University of Arizona, Tucson, AZ 85721, USA
   8 Sterrenkundig Observatorium, Ghent, Belgium
   8 Space Telescope European Coordinating Facility, Garching, Germany
   8 Sonnenobservatorium Kanzelhoehe, Sattendorf, Austria
   8 Physics Department, University of Tasmania, GPO Box 252C, Hobart, TAS 7001, Australia
   8 Observatorio del Roque de los Muchachos, Santa Cruz de la Palma, Spain
   8 Nuffield Radio Astronomy Laboratories, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK
   8 Nicolaus Copernicus Astronomical Center, Bartycka 18, 00-716 Warsaw, Poland
   8 New Mexico Institute of Mining and Technology, Socorro, NM
   8 Nauchno-Issledovatel'skii Radiofizicheskii Institut, Gorki, USSR
   8 National Research Council of Canada, Victoria, BC, Canada
   8 National Bureau of Standards, Quantum Physics Div., Boulder, Colo.
   8 Mt Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia
   8 Mathematical Science Consultants, Inc., Greenbelt, MD
   8 Leuven, Katholieke Univ., Heverlee, Belgium
   8 Leiden Observatory, PO Box 9513, 2300 RA Leiden, The Netherlands
   8 Kungl. Tekniska Hogskolan, Stockholm, Sweden
   8 Joint Astronomy Centre, 660 N. A`ohoku Place, Hilo, HI 96720, USA
   8 Hartebeesthoek Radio Astronomy Observatory, Krugersdorp, South Africa
   8 Dublin Institute for Advanced Studies, Republic of Ireland
   8 Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK
   8 Department of Physics, University College, The University of New South Wales, Australian Defence Force Academy, Canberra, ACT 2600, Australia
   8 Department of Physics and Astronomy, Arizona State University, Tempe, AZ 85287-1504, USA
   8 Copenhagen, University, Observatory, Copenhagen, Denmark
   8 Commonwealth Scientific and Industrial Research Organization, Epping, New South Wales, Australia
   8 Chilbolton Observatory, Stockbridge, Hants., England
   8 Chalmers University of Technology, Goteborg, Sweden
   8 California Univ., San Diego, La Jolla, CA, US
   8 CNRS, Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse, Orsay, Essonne, France
   8 Bordeaux, Universite, Observatoire, Floirac, Gironde, France
   8 Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany
   8 Akademiia Nauk SSSR, Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Troitsk, USSR
   8 Academy of Sciences of the Czech Republic, Czech Republic
   7 Western Washington University, Bellingham, WA
   7 Washington State University, Pullman, WA
   7 University of South Africa, Pretoria, Republic of South Africa
   7 University of California at Santa Barbara, Santa Barbara, CA, US
   7 University College, Dublin, Republic of Ireland
   7 Univ. of Amsterdam, Amsterdam, The Netherlands
   7 Tokyo Inst. of Technology, Meguro, Tokyo, Japan
   7 Sterrewacht Leiden, Leiden, The Netherlands
   7 South African Council for Scientific and Industrial Research, National Institute for Telecommunications Research, Johannesburg, Republic of South Africa
   7 Scientific and Technical Research Council of Turkey, Research Institute for Basic Sciences, Gebze
   7 Scarborough College, West Hill, Ontario, Canada
   7 SRON, Laboratory for Space Research, Groningen, Netherlands
   7 Quebec, Observatoire Astronomique, Quebec, Canada
   7 National Institute of Standards and Technology, Boulder, CO, US
   7 National Center for Supercomputing Applications, Urbana, IL, US
   7 NASA, Ames Research Center, Theoretical and Planetary Studies Branch, Moffett Field, CA
   7 Lockheed Missiles and Space Co., Inc., Palo Alto, CA
   7 Lawrence Berkeley Laboratory, Berkeley, CA, US
   7 Kawasaki Heavy Industries, Ltd., Aircraft Engineering Div., Kakamigahara, Japan
   7 Katholieke Univ. Leuven, Heverlee, Belgium
   7 Karl-Schwarzschild-Observatorium, Tautenburg, Germany
   7 Kapteyn Astronomical Institute, PO Box 800, 9700 AV Groningen, The Netherlands
   7 Kapteyn Astronomical Institute, Groningen, Netherlands
   7 Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune 411007, India
   7 Inst. of Solar-Terrestrial Physics, Russia
   7 Huygens Laboratory, Leiden, Netherlands
   7 Herzberg Institute of Astrophysics, Victoria, BC, Canada
   7 Hatfield Polytechnic Observatory, Hertford, Herts., England
   7 Hartebeesthoek Radio Astronomy Observatory, PO Box 443, Krugersdorp 1740, South Africa
   7 Frankfurt, Universitaet, Frankfurt am Main, Federal Republic of Germany
   7 European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei Munchen, Germany
   7 Dublin Institute for Advanced Studies, Ireland
   7 Department of Physics and Astronomy, University of Wales, College of Cardiff, PO Box 913, Cardiff CF2 3YB
   7 Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803-4001, USA
   7 Department of Astronomy and McDonald Observatory, University of Texas, Austin, TX 78712, USA
   7 Departamento de Astronomia y Astrofisica, Universidad de Valencia, Dr. Moliner 50, E-46100 Burjassot, Valencia, Spain
   7 Complejo Astronomico El Leoncito, San Juan, Argentina
   7 Clark Lake Radio Observatory, Borrego Springs, CA
   7 Center for Solar and Space Research, Yale Univ., New Haven, CT, US
   7 California, University, Lawrence Berkeley Laboratory, Berkeley, Calif.
   7 CNR, Istituto per le Applicazioni Interdisciplinari della Fisica, Palermo, Italy
   7 Bulgarian Academy of Sciences, Dept. of Astronomy, Sofia, Bulgaria
   7 Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, Mile End Road, London E1 4NS
   7 Aerospace Corp., Space and Environment Technology Center, Los Angeles, CA
   7 APS Division, Department of Pure and Applied Physics, Queen's University, Belfast BT7 1NN, UK
   6 Washington State University, Pullman, Wash.
   6 Warner and Swasey Observatory, East Cleveland, Ohio
   6 Warner and Swasey Observatory, East Cleveland, OH
   6 URA 1361 du CNRS, Saint-Vallier, France
   6 UCO/Lick Observatory, University of California, Santa Cruz, CA 95064, USA
   6 The Wise Observatory and the School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
   6 The Aerospace Corporation, Los Angeles, CA, US
   6 Sterrewacht Leiden, PO Box 9513, 2300 RA Leiden, The Netherlands
   6 Southwestern Louisiana, University, Lafayette, LA
   6 South African Astronomical Observatory, Observatory
   6 Shanghai Observatory, Chinese Academy of Sciences, 200030 Shanghai, China
   6 School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
   6 Sandia National Laboratories, Albuquerque, NM
   6 Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, UK
   6 Royal Australian Air Force Academy, Parkville, Australia
   6 Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel
   6 Princeton University, Princeton, New Jersey, US
   6 Physics Department, University of Tasmania, GPO Box 252C, Hobart, Tasmania, Australia 7001
   6 Physics Department, University of Durham, Durham DH1 3LE, UK
   6 Physics Department, The University of Queensland, Queensland 4072, Australia
   6 Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Firenze, Italy
   6 Nijmegen, Katholieke Universiteit, Nijmegen, Netherlands
   6 National Bureau of Standards, Laboratory Astrophysics Div., Boulder, Colo.
   6 NASA, Johnson Space Center, Astrophysics Section, Houston, Tex.
   6 Middlebury College, Middlebury, VT, US
   6 Metsahovi Radio Research Station, Kylmala, Finland
   6 Max-Planck-Institut fur Astrophysik, Postfach 1523, D-85740 Garching, Germany
   6 Lewis and Clark College, Portland, OR, US
   6 Lab. d'Astrophysique de Toulouse, Toulouse, France
   6 Instituto de Astronomia, UNAM, Ap. 70-264, 04510 Mexico, DF, Mexico
   6 Instituto Astronomico e Geofisico da USP, Av. Miguel Stefano 4200, 04301-904 Sao Paulo, SP, Brazil
   6 Indian Space Research Organization, Technical Physics Division, ISRO Satellite Centre, Airport Road, Bangalore 560017, India
   6 Helsinki Univ. of Technology, Kylmala, Finland
   6 Haute-Provence, Observatoire, St.-Michel-l'Observatoire, France
   6 Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge MA 02138, USA
   6 Hampden-Sydney College, Hampden-Sydney, VA, US
   6 Gettysburg College, Gettysburg, PA, US
   6 General Electric Co., Space Systems Div., Philadelphia
   6 Forskningsinstitutet for Atomfysik, Stockholm, Sweden
   6 Florida International University, Miami
   6 European Southern Observatory, Casilla 19001, Santiago 19, Chile
   6 Department of Physics, University of Sheffield, The Hicks Building, Hounsfield Road, Sheffield S3 7RH, UK
   6 Department of Physics, The Citadel, Charleston, SC 29409, USA
   6 Department of Physics, Science Laboratories, South Road, Durham DH1 3LE, UK
   6 Department of Physics and Astronomy, University of Manchester, Schuster Laboratory, Oxford Road, Manchester M13 9PL, UK
   6 Department of Physics and Astronomy, University of Manchester, Schuster Laboratory, Oxford Road, Manchester M13 9PL
   6 Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB3 9EW
   6 Computer Sciences Corp., Astronomy Dept., Silver Spring, MD
   6 Commonwealth Scientific and Industrial Research Organization, Div. of Chemical Physics, Clayton, Victoria, Australia
   6 Clark Lake Radio Observatory, Borrego Springs, Calif.
   6 Centre d'Etudes et de Recherches de la Machine-Outil, Saint-Martin-d'Heres, Isere, France
   6 Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101, USA
   6 CSIRO, Div. of Radiophysics, Sydney, Australia
   6 CNRS, Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse, Orsay, France
   6 CNR, Istituto di Fisica Cosmica ed Applicazioni dell'Informatica, Palermo, Italy
   6 CNR, Ist. di Fisica Cosmica con Applicazioni all'Informatica, Palermo, Italy
   6 CNR, Centro per l'Astronomia Infrarossa, Florence, Italy
   6 Bowling Green State University, Bowling Green, OH
   6 Blackett Laboratory, Imperial College, London SW7 2BZ, UK
   6 Beograd, Astronomska Opservatorija, Belgrade, Yugoslavia
   6 Astrophysics, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH
   6 Astronomy Unit, School of Mathematical Sciences, Queen Mary & Westfield College, Mile End Road, London E1 4NS, UK
   6 Astronomy Group, University of Leicester, Leicester LE1 7RH, UK
   6 Astronomy Centre, University of Sussex, Falmer, Brighton BN1 9QH, UK
   6 Astronomy Centre, School of Mathematical and Physical Sciences, University of Sussex, Falmer, Brighton BN1 9QH
   6 Astronomical Institute `Anton Pannekoek', University of Amsterdam and Center for High Energy Astrophysics, Kruislaan 403, NL-1098 SJ Amsterdam, the Netherlands
   6 Armagh Observatory, College Hill, Armagh BT61 9DG
   6 Academy of Sciences of Czech Republic, Ondrejov, Czech Republic
   6 AN SSSR, Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Troitsk, USSR
   5 Western Kentucky University, Bowling Green, Ky.
   5 Western Kentucky University, Bowling Green, KY
   5 Wellesley College, Wellesley, Mass.
   5 University of Western Ontario, London, Ontario, Canada
   5 University of Southampton, Department of Physics, Highfield, Southampton SO17 1BJ, UK
   5 Universitat de les Illes Balears, Palma de Mallorca, Spain
   5 Universitaets-Sternwarte Muenchen, Munich, Germany
   5 Universidade Federal Fluminense, Niteroi, Brazil
   5 Univ. of Electro-Communications, Tokyo, Japan
   5 Univ. de les Illes Balears, Palma de Mallorca, Spain
   5 Univ. Nacional de La Plata, La Plata, Argentina
   5 U.S. Merchant Marine Academy, Kings Point, NY
   5 Theoretical Physics, Department of Physics, 1 Keble Road, Oxford OX1 3NP
   5 Systems and Applied Sciences Corp., Hyattsville, MD
   5 Stichting Astronomisch Onderzoek in Nederland, Amsterdam, Netherlands
   5 Stephen F. Austin State University, Nacogdoches, TX
   5 State Univ. of New York, Stony Brook, NY, US
   5 St. Andrews, University, Observatory, St. Andrews, Scotland
   5 Sonnenobservatorium Einsteinturm, Potsdam, East Germany
   5 Severn Communications Corp., Severna Park, MD
   5 Science Research Council, Appleton Laboratory, Slough, Bucks., England
   5 Science Applications International Corp., San Diego, CA
   5 School of Physics, University College, Australian Defence Force Academy, The University of New South Wales, Canberra, 2600, ACT, Australia
   5 School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS
   5 Sandia Laboratories, Albuquerque, N. Mex.
   5 Saint Patrick's College, Maynooth, Republic of Ireland
   5 Research Centre for Theoretical Astrophysics, School of Physics A28, University of Sydney, NSW 2006, Australia
   5 Radiosterrewacht, Dwingeloo, Netherlands
   5 Princeton Univ. Observatory, Peyton Hall, NJ, US
   5 Pic-du-Midi, Observatoire, Bagneres-de-Bigorre, France
   5 Palomar Observatory, California Institute of Technology, Mail Stop 105-24, Pasadena, CA 91125, USA
   5 Palermo, Universita and CNR, Gruppi Italiani di Fisica Cosmica, Palermo, Italy
   5 Osservatorio Astronomico, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy
   5 Obserwatorium Astronomiczne, Torun, Poland
   5 Observatoire de Marseille, 2 Place Le Verrier, F-13248 Marseille Cedex 4, France
   5 Observatoire Midi-Pyrenees, Bagneres-de-Bigorre, France
   5 Observatoire Midi-Pyrenees, Bagneres de Bigorre, France
   5 Nijmegen, Katholieke Universiteit, Nijmegen
   5 Nijmegen, Katholieke Universiteit, Netherlands
   5 Newcastle-upon-Tyne, University, Newcastle-upon-Tyne, England
   5 Newcastle upon Tyne, University, England
   5 National Laboratory for High Energy Physics, Tsukuba, Japan
   5 National Lab. for High Energy Physics, Tsukuba, Japan
   5 National Institute of Standards and Technology, Gaithersburg, MD, US
   5 National Bureau of Standards, Molecular Spectroscopy Div., Washington, DC
   5 Mount John Observatory, Christchurch, New Zealand
   5 Max-Planck-Institut fur extraterrestrische Physik, Giessenbachstrasse, D-85740 Garching, Germany
   5 Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, D-85740 Garching, Germany
   5 Lyon, Ecole Normale Superieure, France
   5 Leiden Observatory, PO Box 9513, 2300 RA, Leiden, The Netherlands
   5 Laboratory for High Energy Astrophysics, Code 660, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA
   5 Laboratoire d'Astrophsiqure de Toulouse, Toulouse, France
   5 Kapteyn Laboratorium, Groningen, Netherlands
   5 Joint Astronomy Centre, 660 N. A`ohoku Place, University Park, Hilo, HI 96720, USA
   5 Jamieson Science and Engineering, Inc., Scotts Valley
   5 Istituto e Osservatorio Astronomico di Palermo, Palermo, Italy
   5 International Statistics and Research Corp., Brentwood Bay, Canada
   5 International Centre for Theoretical Physics
   5 Instituto de Fisica de Cantabria (Consejo Superior de Investigaciones Cientificas - Universidad de Cantabria), 39005 Santander, Spain
   5 Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
   5 Institut fur Astronomie, Universitat Wien, Turkenschanzstrasse 17, A-1180 Wien, Austria
   5 Institut fuer Kosmosforschung, Berlin, Federal Republic of Germany
   5 Inst. de Estudios Avanzados en Fisica Moderna y Biologia Molecular, Santander, Spain
   5 Imperial College of Science, Technology and Medicine, Blackett Laboratory, Prince Consort Road, London SW7 2BZ
   5 Helsinki Univ. of Technology, Espoo, Finland
   5 Hatfield Polytechnic, Hatfield, Herts., England
   5 Franklin and Marshall College, Lancaster, PA, US
   5 Foundation for Research and Technology-Hellas, Heraklion, Greece
   5 Fermi National Accelerator Laboratory, Batavia, IL, US
   5 Edinburgh, Royal Observatory, U.K. Schmidt Telescope Unit, Coonabarabran, Australia
   5 Edinburgh, Royal Observatory, Coonabarabran, New South Wales, Australia
   5 ESA, Space Telescope European Coordinating Facility, Garching, Federal Republic of Germany
   5 Dipartimento di Astronomia, Universita di Bologna, via Zamboni 33, Bologna 40126, Italy
   5 Deutsche Akademie der Wissenschaften, Zentralinstitut fuer Astrophysik, Potsdam, East Germany
   5 Department of Pure and Applied Physics, Queen's University, Belfast BT7 1NN, UK
   5 Department of Pure and Applied Physics, Queen's University, Belfast BT7 1NN
   5 Department of Physics, University of Padova, Via Marzolo 8, 35131 Padova, Italy
   5 Department of Physics, Nuclear and Astrophysics Laboratory, Keble Road, University of Oxford, Oxford OX1 3RH
   5 Department of Physics, Astrophysics, University of Oxford, Keble Road, Oxford OX1 3RH, UK
   5 Department of Physics and Astronomy, University of Kansas, Lawrence, KS 66045, USA
   5 Department of Applied Mathematics and Theoretical Physics, The Queen's University of Belfast, Belfast BT7 1NN
   5 Departamento de Astronomia, IF-UFRGS, CP 15051, CEP 91501-970, Porto Alegre, RS, Brasil
   5 Copernicus Astronomical Center, Bartycka 18, 00-716 Warsaw, Poland
   5 Consejo Superior de Investogaciones Cientificas, Granada, Spain
   5 Commissariat a l'Energie Atomique, Centre d'Etudes de Limeil, Villeneuve-Saint-Georges, Val-de-Marne
   5 Comision Nacional de Investigacion del Espacio, Torrejon de Ardoz, Spain
   5 College of William and Mary, Williamsburg, Va.
   5 Centro di Studi sui Sistemi, Turin, Italy
   5 Centre for Astrophysics, University of Central Lancashire, Preston PR1 2HE
   5 California Institute of Technology, Jet Propulsion Laboratory, Earth and Space Sciences Div., Pasadena, Calif.
   5 CNR, Laboratorio per il Plasma nello Spazio, Frascati, Italy
   5 CNR, Istituto di Fisica Cosmica, Milan
   5 CNR, Gruppo Nazionale di Astronomia, Florence, Italy
   5 CNR, Centro per l'Astronomia Infrarossa e lo Studio del Mezzo Interstellare, Florence, Italy
   5 CNR, Centro di Astronomia Infrarossa, Florence, Italy
   5 CNPq, Laboratorio Nacional de Astrofisica, Itajuba, Brazil
   5 Boyden Observatory, Bloemfontein, Republic of South Africa
   5 Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2BZ, UK
   5 Atmospheric and Environmental Research, Inc., Cambridge, Mass.
   5 Athens, National Capodistrian University, Athens, Greece
   5 Astrophysikalisches Institut Postsdam, An der Sternwarte 16, D-14482, Potsdam, Germany
   5 Astrophysics Group, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK
   5 Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, Mile End Road, London E1 4NS, UK
   5 Astronomy Group, Leicester University, University Road, Leicester LE1 7RH
   5 Astronomy Department, University of Cape Town, Private Bag, Rondebosch, 7700, South Africa
   5 Astronomisches Rechen-Institut, Monchhofstrasse 12-14, D-69120 Heidelberg, Germany
   5 Astronomical Inst. 'Anton Pannekoek', Amsterdam, Netherlands
   5 Academy of Sciences of the Czech Republic, Ondrejov, Czech Republic
   5 AN LSSR, Institut Fiziki, Vilnius, Lithuanian SSR
   4 X-Ray Astronomy Group, Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH
   4 Wyzsza Szkola Pedagogiczna, Rzeszow, Poland
   4 Wise Observatory, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel
   4 Wise Observatory, Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
   4 Western Ontario, University, London, Ontario, Canada
   4 Warszawa, Uniwersytet, Obserwatorium Astronomiczne, Warsaw, Poland
   4 Warsaw University Observatory, Al. Ujazdowskie ~4, 00-478 Warsaw, Poland
   4 Vassar College Observatory, Poughkeepsie, NY, US
   4 Uttar Pradesh State Observatory, Naini Tal, India
   4 University of the Bosphorus, Istanbul, Turkey
   4 University of Sydney, New South Wales, Australia
   4 University of Electro-Communications, Chofu, Japan
   4 University of Edinburgh, Department of Mathematics and Statistics, King's Buildings, Edinburgh EH9 3JZ
   4 University of Belfast, Belfast, Northern Ireland
   4 Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
   4 Univ. of of Hawaii, Honolulu, Hawaii, US
   4 Univ. degli Studi di Milano, Milano, Italy
   4 Univ. de Nice Sophia Antipolis, Nice, France
   4 U.S. Air Force Academy, Colorado Springs, CO
   4 Theoretical Astrophysics Center, Juliane Maries Vej 30, DK-2100 Copenhagen O, Denmark
   4 The Australian National University Astrophysical Theory Centre, School of Mathematical Sciences, Canberra, ACT 0200, Australia
   4 Teoretisk Astrofysik Center, Danmarks Grundforskningsfond, Institut for Fysik og Astronomi, Aarhus Universitet, DK-8000 Aarhus C, Denmark
   4 Systems and Applied Sciences Corp., Riverdale, Md.
   4 Steward Observatory, Arizona Univ., Tucson, AZ, US
   4 Sterrewacht Leiden, Postbus 9513, 2300 RA Leiden, Netherlands
   4 State Institute of Theoretical Physics and Astronomy, Gostauto 12, Vilnius 2600, Lithuania
   4 Special Astrophysical Observatory, Russian Academy of Sciences, Niznhny Arkhyz, Karachai-Cherkess Republic, 357147, Russia
   4 Southwestern Louisiana, University, Lafayette, La.
   4 Sonoma State Univ., Rohnert Park, CA, US
   4 Slovenska Akademia Vied, Astronomicky Ustav, Tatranska Lomnica, Czechoslovakia
   4 Sektion Physik, Ludwig-Maximilians-Universitat, Theresienstr. 37, D-80333 Munchen, Germany
   4 Science Research Council, Appleton Laboratory, Madrid, Spain
   4 Science Applications International Corp., Planetary Science Institute, Tucson, AZ
   4 School of Physics, University of New South Wales, PO Box 1, Kensington NSW 2033, Australia
   4 School of Physics, University of Melbourne, Parkville, Victoria 3052, Australia
   4 School of Physics and Astronomy and the Wise Observatory, The Raymond and Beverley Sackler Institute of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
   4 School of Cosmic Physics, Dublin, Ireland
   4 School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS
   4 School of Chemistry, University of Bristol, Bristol BS8 1TS, UK
   4 School of Chemical and Physical Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF
   4 San Francisco State University, San Francisco, CA
   4 SISSA - International School for Advanced Studies, via Beirut 2-4, I-34013 Trieste, Italy
   4 Royal Greenwich Observatory, Apartado de Correos 321, Santa Cruz de La Palma, 38780 Tenerife, Canary Islands, Spain
   4 Research Centre of Crete, Heraklion, Greece
   4 Real Inst. y Observatorio de la Armada, San Fernando, Spain
   4 Potchefstroom University for CHE, Potchefstroom, South Africa
   4 Physics Department, University of York, Heslington, York YO1 5DD, UK
   4 Owens Valley Radio Observatory, Caltech, Pasadena, CA, US
   4 Osservatorio Astronomico di Torino, I-10025, Pino Torinese, Italy
   4 Osservatorio Astronomico di Padova, vicolo dell'Osservatorio 5, I-35122 Padova, Italy
   4 Osservatorio Astronomico di Brera, Via Bianchi 46, I-22055 Merate (CO), Italy
   4 Osservatorio Astrofisica di Arcetri, Firenze, Italy
   4 Osservatorio 'Tito Lucrezio Caro', Bologna, Italy
   4 Observatoire du Calern, Saint-Vallier-de-Thiey, France
   4 Oak Ridge National Laboratory, Oak Ridge, Tenn.
   4 Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL
   4 Newfoundland, Memorial University, St. John's, Canada
   4 National Research Council of Canada, Ottawa, Canada
   4 National Bureau of Standards, Time and Frequency Div., Boulder, CO
   4 NASA, Goddard Space Flight Center, Solar Maximum Mission Experiment Operations Facility, Greenbelt, MD
   4 NASA, Goddard Space Flight Center, Cosmic Radiations Branch, Greenbelt, Md.
   4 N. Copernicus Astronomical Center, Bartycka 18, 00-716 Warsaw, Poland
   4 Mt John University Observatory, Department of Physics and Astronomy, University of Canterbury, Christchurch, New Zealand
   4 Missouri-Columbia, University, Columbia, Mo.
   4 Missouri-Columbia, University, Columbia, MO
   4 McDonald Observatory and Department of Astronomy, University of Texas at Austin, Austin TX 78712, USA
   4 Max-Planck-Institut fur Radioastronomie, Auf dem Hugel 69, D-53121 Bonn, Germany
   4 Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, D-85748 Garching, Germany
   4 Max-Planck-Institut fur Astronomie, Konigstuhl 17, 69117 Heidelberg, Germany
   4 Max-Planck-Gesellschaft Arbeitsgruppe 'Theoretische Vielteilchenphysik', Universitat Rostock, D-18051 Rostock, Germany
   4 Mathematical Science Consultants, Inc., Greenbelt, MD, US
   4 MPI fuer Aeronomie, Katlenburg-Lindau, Germany
   4 Lick Observatory, California Univ., Santa Cruz, CA, US
   4 Laurentian University, Sudbury, Ontario, Canada
   4 Laboratori Nazionali INFN, Frascati, Italy
   4 Lab. de Astrofisica Espacial y Fisica Fundamental, Madrid, Spain
   4 Kungliga Tekniska Hogskolan, Stockholm, Sweden
   4 Keele University, Department of Physics, Keele, Staffordshire ST5 5BG, UK
   4 Katholieke Universiteit Leuven, Heverlee, Belgium
   4 Kapteyn Astronomical Institute, Groningen, The Netherlands
   4 Jamieson Science and Engineering, Inc., Felton, CA
   4 Istituto di Radioastronomia del CNR, via Gobetti 101, I-40129 Bologna, Italy
   4 International School for Advanced Studies (SISSA), Via Beirut 2-4, 34013 Trieste, Italy
   4 Instituto y Observatorio de Marina, San Fernando, Spain
   4 Instituto de Fisica, Universidade Federal do Rio Grande do Sul, Av. Bento Goncalves, 9500, Caixa Postal 15051, CEP 91501-970, Porto Alegre, RS, Brazil
   4 Instituto de Astrofisica, CSIC, Apartado 3004, E-18080 Granada, Spain
   4 Instituto Astronomico e Geofisico da USP, Sao Paulo, Brazil
   4 Institute of Theoretical Physics and Astronomy, Gostauto 12, Vilnius 2600, Lithuania
   4 Institute of Space and Astronautical Science, Yoshino-dai, Sagamihara, Kanagawa 229, Japan
   4 Institute of Astronomy, University of Hawaii, Honolulu, HI, US
   4 Institute of Astronomy, Univ. of Cambridge, United Kingdom
   4 Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
   4 Institut d'Astronomie de l'Universite de Lausanne, CH-1290 Chavannes-des-Bois, Switzerland
   4 Institut Geographique National, Saint-Mande, France
   4 Inst. fuer Theoretische Physik und Sternwarte der Univ, Kiel, Germany
   4 Inst. fuer Astronomie der Leopold-Franzens-Universitat, Innsbruck, Austria
   4 Inst. de Fisica Corpuscular, Burjasot, Spain
   4 Inst. d'Astrophysique Spatiale, Verrieres-le-Buisson, France
   4 Inst. Nacional de Tecnica Aeroespacial, Madrid, Spain
   4 Inst. Nacional de Astrofisica, Optica y Electronica, Puebla
   4 Herzberg Inst. of Astrophysics, Victoria, BC, Canada
   4 Hatfield Polytechnic Observatory, Hertford, England
   4 Harvey Mudd College, Claremont, Calif.
   4 Groningen, Rijksuniversiteit, Groningen
   4 Garniiskaia Laboratoriia Kosmicheskoi Astronomii, Yerevan, Armenian SSR
   4 Franklin and Marshall College, Lancaster, PA
   4 Firenze, Universita and CNR, Gruppi Italiani di Fisica Cosmica, Florence, Italy
   4 European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748, Garching bei Munchen, Germany
   4 European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching, Germany
   4 Dublin Institute for Advanced Studies, Dublin, Ireland
   4 Dublin Inst. for Advanced Studies, Dublin, Ireland
   4 Dipartimento di Fisica Galileo Galilei, Universita di Padova, via Marzolo 8, I-35131 Padova, Italy
   4 Department of Physics, Victoria University of Wellington, PO Box 600, Wellington, New Zealand
   4 Department of Physics, University of Sheffield, The Hicks Building, Hounsfield Road, Sheffield S3 7RH
   4 Department of Physics, University of Sheffield, Sheffield S3 7RH
   4 Department of Physics, University of Durham, Science Laboratories, South Road, Durham DH1 3LE, UK
   4 Department of Physics, UMIST, PO Box 88, Manchester M60 1QD, UK
   4 Department of Physics, The Ohio State University, Columbus, OH 43210, USA
   4 Department of Physics, South Road, University of Durham, Durham DH1 3LE, UK
   4 Department of Physics, Keble Road, Oxford OX1 3RH, UK
   4 Department of Physics and Astronomy, University of Wales, PO Box 913, Cardiff, Wales
   4 Department of Physics and Astronomy, University of Massachusetts, Amherst, MA 01003-4525, USA
   4 Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506-0055, USA
   4 Department of Physics and Astronomy, Johns Hopkins University, Homewood Campus, Baltimore, MD 21218, USA
   4 Department of Physics and Astronomy, Iowa State University, Ames, IA 50211, USA
   4 Department of Physics and Asher Space Research Institute, Israel Institute of Technology, Haifa, 32000, Israel
   4 Department of Physics (Theoretical Physics), University of Oxford, 1 Keble Road, Oxford OX1 3NP
   4 Department of Mathematics, UMIST, PO Box 88, Manchester M60 1QD, UK
   4 Department of Chemistry, The University of Nottingham, University Park, Nottingham NG7 2RD, UK
   4 Department of Chemistry, The University of Nottingham, University Park, Nottingham NG7 2RD
   4 Department of Astrophysics, University of Oxford, Keble Road, Oxford OX1 3RH, UK
   4 Department of Astrophysics, Nagoya University, Chikusa-ku, Nagoya 464-01, Japan
   4 Department of Astronomy, University of Florida, Gainesville, FL 32611, USA
   4 Department of Astronomy, Padova University, Vicolo dell'Osservatorio 5, 35122 Padova, Italy
   4 Departement d'Astronomia i Meteorologia, Universitat de Barcelona, Av. Diagonal 647, E-08028 Barcelona, Spain
   4 Departamento de Astrofisica, Facultad de Fisicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
   4 Departament d'Astronomia i Meteorologia, Av. Diagonal 647, E-08028 Barcelona, Spain
   4 DAPNIA/SAP CEN Saclay, Gif-sur-Yvette, France
   4 DAEC, Observatoire de Paris, Universite Paris VII, CNRS (UA 173), F-92195 Meudon Cedex, France
   4 Copenhagen University Observatory, Oster Voldgade 3, DK-1350 Copenhagen, Denmark
   4 Copenhagen Univ. Observatory, Tollose, Denmark
   4 Cooperative Institute for Research in Environmental Sciences
   4 Conselho Nacional de Desenvolvimento Cientifico e Tecnologico, Sao Paulo, Brazil
   4 Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Andalucia
   4 Communications Research Lab., Tokyo, Japan
   4 Commissariat a l'Energie Atomique, Centre d'Etudes de Limeil, Villeneuve-Saint-Georges, Val-de-Marne, France
   4 College of William and Mary, Williamsburg, VA
   4 Chinese Academy of Sciences, Graduate School, Beijing, People's Republic of China
   4 China Center for Advanced Science and Technology, Beijing, People's Republic of China
   4 Chatterton Astronomy Department, School of Physics, University of Sydney, NSW 2006, Australia
   4 Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil
   4 Centro Astronomico de Yebes, Guadalajara
   4 Centre for Scientific Computing, Espoo, Finland
   4 Centre d'Etudes et de Recherches de la Machine-Outil, Grenoble, France
   4 Central Michigan University, Mount Pleasant, MI
   4 Center for Space Research, Cambridge, MA, US
   4 Center for Solar and Space Research, New Haven, CT
   4 Center for Particle Astrophysics and Departments of Astronomy and Physics, University of California, Berkeley, CA 94720-7304, USA
   4 Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
   4 Cambridge Research and Instrumentation, Inc., MA
   4 California, University, Santa Barbara and Berkeley, CA
   4 California, University, Los Alamos Scientific Laboratory, Los Alamos, NM
   4 California Institute of Technology, Jet Propulsion Laboratory, Image Processing Laboratory, Pasadena, Calif.
   4 CSIRO, Div. of Radio Physics, Epping, Australia
   4 CSIRO, Div. of Applied Physics, Sydney, Australia
   4 CSIC, Centre d'Estudis Avancats de Blanes, Spain
   4 CSIC, Centre d'Estudis Avancats de Blanes
   4 CRAL-Observatoire de Lyon, F69561 Saint-Genis Laval, France
   4 CNRS, Laboratoire Aime Cotton, Orsay, Essonne, France
   4 CNR, Istituto di Fisica dell'Atmosfera, Rome, Italy
   4 CNR, Ist. di Fisica dello Spazio Interplanetario, Frascati, Italy
   4 CNR, Ist. Fisica Spazio Interplanetario, Frascati, Italy
   4 CNR, Gruppo Nazionale per l'Astronomia, Padua
   4 CEA, DSM/DAPNIA, Service d'Astrophysique (CNRS URA 2052), CE Saclay, 91191 Gif-sur-Yvette Cedex, France
   4 Bloomberg Center for Physics and Astronomy, Johns Hopkins University, Homewood Campus, Baltimore, MD 21218, USA
   4 Ball Corp., Ball Aerospace Systems Div., Boulder, CO
   4 B'lgarska Akademiia na Naukite, Samostoiatelna Sektsiia Astronomiia
   4 Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW, 2121, Ausralia
   4 Atmospheric and Environmental Research Inc., Cambridge, MA, US
   4 Astrophysics, Nuclear and Astrophysics Laboratory, Physics Department, Oxford University, Keble Road, Oxford OX1 3RH, UK
   4 Astrophysics, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH, UK
   4 Astrophysics, Department of Physics, Keble Road, Oxford OX1 3RH
   4 Astrophysics Group, Blackett Laboratory, Imperial College of Science, Technology & Medicine, Prince Consort Road, London SW7 2BZ, UK
   4 Astrophysics Division, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX
   4 Astrophysical Inst. Potsdam, Potsdam, Germany
   4 Astronomy Group, Department of Physics, Queen's University at Kingston, Ontario, UK
   4 Astronomy Centre, School of Mathematical and Physical Sciences, University of Sussex, Falmer, Brighton BN1 9QH, UK
   4 Astronomisches Rechen-Institut, Heidelberg, Germany
   4 Astronomisches Institut der Universitaet Tuebingen, Tuebingen, Germany
   4 Astronomical Observatory, St. Petersburg, Russia
   4 Astronomical Institute, Tohoku University, Sendai 980-77, Japan
   4 Astronomical Institute `Anton Pannekoek', University of Amsterdam and Center for High Energy Astrophysics, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
   4 Astro Space Center, Lebedev Physical Inst., Moscow, Russia
   4 American Science and Engineering, Inc., Cambridge, MA
   4 Akademiia Nauk SSSR, Sibirskii Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Irkutsk, USSR
   4 Aerospace Corporation, Los Angeles, CA, US
   4 Abastumanskaia Astrofizicheskaia Observatoriia, Mount Kanobili, Georgian SSR
   4 Aarne Karjalainen Observatory, Oulu, Finland
   4 AN SSSR, Sibirskii Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Irkutsk, USSR
   3 Yunnan Observatory, Chinese Academy of Sciences, PO Box 110, Kunming 650011, Yunnan, China
   3 X-ray Astronomy Group, Physics Department, University of Leicester, Leicester LE1 7RH, UK
   3 X-ray Astronomy Group, Department of Physics & Astronomy, University of Leicester, Leicester LE1 7RH
   3 Western Connecticut State University, Danbury
   3 Warsaw University Observatory, Al. Ujazdowskie 4, PL-00478 Warszawa, Poland
   3 Vilnyus Astronomical Observatory, Vilnyus, Lithuanian SSR
   3 Vicolo dell'Osservatorio, Universita di Padova, Padova, Italy
   3 Uttar Pradesh State Observatory, Manora peak, Naini Tal, 263129, India
   3 Utrecht, Sterrekundig Instituut, Utrecht, Netherlands
   3 University of St. Andrews, St. Andrews, Scotland
   3 University of St Andrews, School of Physics and Astronomy, North Haugh, St Andrews, Fife KY16 9SS, UK
   3 University of North Carolina at Chapel Hill, Chapel Hill, NC, US
   3 University of Manchester, NRAL, Jodrell Bank, Macclesfield, Cheshire SK11 9DL
   3 University of Durham, Department of Physics, South Road, Durham DH1 3LE, UK
   3 University of Durham, Department of Physics, Science Laboratories, South Road, Durham DH1 3LE, UK
   3 University of Chicago, Astronomy and Astrophysics Center, 5640 South Ellis Avenue, Chicago, IL 60637, USA
   3 University of California, Los Angeles, Los Angeles, CA, US
   3 University of California at Los Angeles, Los Angeles, California, US
   3 University Observatory, Ostervoldgade 3, DK-1350 Copenhagen K, Denmark
   3 University Observatory, Ostervoldgade 3, Copenhagen, Denmark
   3 Universite de Provence and Centre de Physique Theorique - CNRS, Luminy Case 907, 13288 Marseille cedex 9, France
   3 Universite de Montreal, Montreal, Quebec, Cannada
   3 Universitats-Sternwarte Gottingen, Geismarlandstrasse 11, D-37083 Gottingen, Germany
   3 Universitats-Sternwarte Gottingen, Geismarlandstrasse 11, 37083 Gottingen, Germany
   3 Universidad de la Republica, Montevideo, Uruguay
   3 Universidad Simon Bolivar, Caracas, Venezuela
   3 Univ. of St. Andrews, St. Andrews, Scotland, UK
   3 Univ. of Puerto Rico, Humacao, Puerto Rico
   3 Univ. of Missouri-St. Louis, St. Louis, MO, US
   3 Univ. College Dublin, Belfield, Dublin, Ireland
   3 U.S. Department of Energy, Office of Nuclear Energy, Washington, D.C.
   3 U.S. Department of Energy, Office of Energy Research, Washington, D.C.
   3 Turku University Observatory, University of Turku, Tuorla, FIN-21500 Pukkio, Finland
   3 Tokyo Gakugei Univ., Koganei, Tokyo, Japan
   3 Theoretical Physics, Department of Physics, 1 Keble Road, Oxford OX1 3NP, UK
   3 Theoretical Astrophysics, Caltech 130-33, Pasadena, CA 91125, USA
   3 Theoretical Astrophysics Center, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark
   3 Theoretical Astrophysics Center, Blegdamsvej 17, DK-2100 Copenhagen O, Denmark
   3 The University of Queensland, St Lucia Queensland 4072, Australia
   3 The University of Manchester, NRAL, Jodrell Bank, Macclesfield, Cheshire SK11 9DL
   3 The Queens's University of Belfast, Belfast, UK
   3 The Queens University of Belfast, Belfast, Ireland, UK
   3 The Queen's Univ. of Belfast, Belfast, Northern Ireland, UK
   3 Teledyne, Inc., Teledyne Brown Engineering, Huntsville, AL
   3 Teledyne Brown Engineering, Huntsville, Ala.
   3 Teledyne Brown Engineering, Huntsville, AL
   3 Systems and Applied Sciences Corp., Riverdale, MD
   3 Systems and Applied Sciences Corp., Bladensburg, MD
   3 Swiss Federal Inst. of Technology, Zurich, Switzerland
   3 Sweet Briar College, Sweet Briar, VA, US
   3 Sunset Hills Observatory, Hacienda Hgts., CA, US
   3 Sternwarte der Universitat Bonn, Auf dem Hugel 71, D--53121 Bonn, Germany
   3 State Univ. of New York at Stony Brook, Stony Brook, NY, US
   3 St. Petersburg Technical Univ., St. Petersburg, Russia
   3 St. Mary's Univ., Halifax, Nova Scotia, Canada
   3 Space and Environment Tech. Center, Aerospace Corp., Los Angeles, CA, US
   3 Southwest Texas State University, San Marcos, TX
   3 Slovenska Akademia Vied, Astronomicky Ustav, Bratislava, Czechoslovakia
   3 Shanghai Jiao Tong University, Shanghai, China
   3 Scientific Research Council, Astronomy and Space Research Centre, Baghdad, Iraq
   3 Science and Engineering Research Council, Rutherford Appleton Laboratory, Didcot, Oxon
   3 Science Systems, Ltd., Bristol, England
   3 Science Research Council, Appleton Laboratory, Slough, Berks., England
   3 Science Research Council, Appleton Laboratory
   3 Science Applications, Inc., Planetary Science Institute, Tucson, AZ
   3 Science Applications Research, Lanham, MD
   3 Science Applications International Corp., Tucson, AZ
   3 Science Applications International Corp., McLean, VA
   3 School of Physics, University College, ADFA, UNSW, Canberra, ACT 2600, Australia
   3 School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS
   3 School of Physics and Astronomy and the Wise Observatory, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel-Aviv University,Tel Aviv 69978, Israel
   3 School of Physics and Astronomy and Wise Observatory, The Raymond and Beverly Sackler Faculty of Exact Sciences,Tel-Aviv University, Tel-Aviv 69978, Israel
   3 School of Natural Sciences, Princeton, NJ, US
   3 School of Chemistry, University of Bristol, Bristol BS8 1TS
   3 San Francisco State University, San Francisco, Calif.
   3 San Fernando Observatory, California State Univ., Northridge, CA, US
   3 SRON, Lab. for Space Research, Groningen, Netherlands
   3 SRON Laboratory for Space Research Groningen, Groningen, Netherlands
   3 SISSA - International School for Advanced Studies, Trieste, Italy
   3 Royal Radar Establishment, Malvern, Worcs., England
   3 Rossiiskaia Akademiia Nauk, Institut Kosmicheskikh Issledovanii, Moscow, Russia
   3 Rossiiskaia Akademiia Nauk, Fiziko-Tekhnicheskii Institut, St. Petersburg, Russia
   3 Research Centre for Theoretical Astrophysics, School of Physics, University of Sydney, NSW 2006, Australia
   3 Research Center of Crete, Heraklion, Greece
   3 Regional Engineering College, Srinagar, India
   3 Radiophysical Research Inst. (NIRFI), Nizhny Novgorod, Russia
   3 RIKEN, Institute of Physical and Chemical Research, Hirosawa, Wako, Saitama 351-01, Japan
   3 Queensgate Instruments, Ltd., Ascot, England
   3 Queen Mary and Westfield College, Mile End Road, London E1 4NS, UK
   3 Potsdam, Astrophysikalisches Inst., Germany
   3 Pisa, Scuola Normale Superiore, Pisa, Italy
   3 Physikalisches Inst. der Univ. zu Cologne, Cologne, Germany
   3 Physics Department, University of Tasmania, GPO Box 252C, Hobart, Tasmania 7001, Australia
   3 Physics Department, The University, Southampton SO17 3BJ, UK
   3 Physics Department, Queen Mary and Westfield College, Mile End Road, London E1 4NS, UK
   3 Physics Department, Keele University, Keele ST5 5BG
   3 Physics Department, Durham University, Durham DH1 3LE, UK
   3 P.N. Lebedev Physical Inst. of the Academy of Sciences, Moscow, Russia
   3 Oxford University Physics Department, Nuclear Physics Building, Keble Road, Oxford OX1 3RJ, UK
   3 Osservatorio Astronomico di Torino, Strada Osservatorio 20, I-10025 Pino Torinese (TO), Italy
   3 Osservatorio Astronomico di Roma, Viale del Parco Mellini 84, 00136 Roma, Italy
   3 Osservatorio Astronomico di Monte Mario, viale del Parco Mellini 84, I-00136 Roma, Italy
   3 Osservatorio Astronomico di Collurania, I-64100, Teramo, Italy
   3 Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125, Firenze, Italy
   3 Oranim-University Division, Tivon, Israel
   3 Obserwatorium Astronomiczne, Wroclaw, Poland
   3 Observatorium Astronomiczne, Krakow, Poland
   3 Observatorio del Roque de los Muchachos, Santa Cruz de La Palma, Spain
   3 Observatorio Astronomico de Cordoba, Cordoba, Argentina
   3 Observatoire de Strasbourg, CNRS, URA 1280, 11 rue de l'Universite, Strasbourg, France
   3 Observatoire de Calern, Saint-Vallier-de-Thiey, France
   3 Observatoire Midi-Pyrenees, 14 Av. E. Belin, 31400 Toulouse, France
   3 Nuffield Radio Astronomy Laboratories, Jodrell Bank, Lower Washington, Macclesfield, Cheshire SK11 9DL, UK
   3 Northwestern University, Evanston, Illinois, US
   3 Newcastle-upon-Tyne, University, England
   3 New South Wales, University, Kensington
   3 New Mexico Institute of Mining and Technology, Socorro, NM, US
   3 National Research Council of Canada, Ottawa
   3 National Optical Astronomy Observatories, Tucson, Arizona, US
   3 National Center for Supercomputing Applications, Urbana, IL
   3 Napfizikai Obszervatorium, Debrecen, Hungary
   3 NSF, Div. of Astronomical Sciences, Washington
   3 NORDITA, Blegdamsvej 17, DK-2100 Copenhagen, Denmark
   3 NASA/Fermi National Accelerator Laboratory, Batavia
   3 NASA, Johnson Space Center, Astrophysics Section
   3 NASA, Infrared Telescope Facility, Hilo, HI
   3 NASA, Goddard Space Flight Center, Solar Maximum Mission Experimenters Operations Facility, Greenbelt, MD
   3 NASA, Goddard Space Flight Center, Infrared and Radio Astronomy Branch, Greenbelt, MD
   3 NASA, Ames Research Center, Astrophysical Experiments Branch, Moffett Field
   3 Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey RH5 6NT
   3 Muenchen, Universitaets-Sternwarte, Munich, West Germany
   3 Muenchen, Technische Universitaet, Munich, Federal Republic of Germany
   3 Mount Suhora Observatory, Krakow Pedagogical University, ul. Podchorazych 2, 30-084 Cracow, Poland
   3 Mount John University Observatory, Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
   3 Mount John Observatory and Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
   3 Monterey Institute for Research in Astronomy, Monterey, CA
   3 Missouri-St. Louis, University, St. Louis
   3 Memorial Univ. of Newfoundland, Corner Brook, Newfoundland, Canada
   3 Max-Planck-Society, Research Unit Gravitational Theory, Universitat Jena, Max-Wien-Platz 1, D-07743 Jena, Germany
   3 Max-Planck-Institut fur Extraterrestrische Physik, Giessenbachstrasse 1, D-85740 Garching bei Munchen, Germany
   3 Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, D-85740 Garching bei Munchen, Germany
   3 Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, 85748 Garching bei Munchen, Germany
   3 Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, 85740 Garching, Germany
   3 Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild- Strasse 1, 85748 Garching, Germany
   3 Max-Planck-Institut fuer Physik, Muenchen, Germany
   3 Max-Planck-Institut fuer Kernphysik, Heidelberg
   3 Max-Planck Institut fur Radioastronomie, Auf dem Hugel 69, D-5300 Bonn 1, Germany
   3 Max Planck Institute for Astrophysics, Box 1523, D-85740 Garching, Germany
   3 Manchester, Victoria University, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Ches., England
   3 Magyar Tudomanyos Akademia, Kozponti Fizikai Kutato Intezete, Budapest, Hungary
   3 Lyon, Ecole Normale Superieure, Lyons, France
   3 London, University, Observatory, Mill Hill, Middx., England
   3 Lewis and Clark College, Portland, OR
   3 Laboratoire d'Astrophysique, Observatoire de Grenoble, BP53X F38041 Grenoble Cedex, France
   3 Lab. fuer Physikalische Chemie, Zuerich, Switzerland
   3 Kutztown State College, Kutztown, Pa.
   3 Kernforschungszentrum Karlsruhe GmbH, West Germany
   3 Keldysh Institute of Applied Mathematics, Moscow, Russia
   3 Keele University, Department of Physics, Keele, Staffordshire ST55BG
   3 Kashima Space Research Center, Kashima, Ibaraki, Japan
   3 Kapteyn Astronomical Institute, Postbus 800, 9700 AV, Groningen, The Netherlands
   3 Kapteyn Astronomical Inst., Groningen, Netherlands
   3 Kanazawa Institute of Technology, Nonoichi, Japan
   3 Joint Institute for VLBI in Europe, Dwingeloo, Netherlands
   3 Joint Astronomy Centre, 660 N. A'Ohoku Place, Hilo HI 96720, USA
   3 Jamieson Science and Engineering, Inc., Scotts Valley, CA
   3 JET PROPULSION LAB., CALIFORNIA INST. OF TECH., PAS
   3 Istitutoe Osservatorio Astronomico di Palermo, Palermo, Italy
   3 Istituto e Osservatorio Astronomico di Palermo, Palazzo dei Normanni, I-90134 Palermo, Italy
   3 Istituto di Radioastronomia, CNR, via Gobetti 101, I-40129 Bologna, Italy
   3 Isaac Newton Group, Apartado 321, 38780 Santa Cruz de La Palma, Tenerife, Canary Islands, Spain
   3 International School for Advanced Studies, Via Beirut 2-4, 34014 Trieste, Italy
   3 International Meteor Organization, PF 600118, D-14401 Potsdam, Germany
   3 Instytut Problemow Jadrowych, Lodz, Poland
   3 Institutt for Matematiske Realfag, Nordlysobservatoriet, Universitet i Tromso, 9000 Tromso, Norway
   3 Instituto de Fisica de Cantabria, CSIC-Universidad de Cantabria, 39005 Santander, Spain
   3 Instituto de Astronomia, Mexico, D.F., Mexico
   3 Instituto de Astrofisica de Canarias, C/Via Lactea, 38200 La Laguna, Tenerife, Spain
   3 Instituto Nacional de Tecnica Aerospacial, Torrejon de Ardoz, Spain
   3 Instituto Nacional de Astrofisica Optica y Electronica, Puebla, Mexico
   3 Instituto Astronomico e Geofisico, Universidade de Sao Paulo, Av. Miguel Stefano, 4200, 04301-904, Sao Paulo, SP, Brazil
   3 Institute of the Space and Astronautical Science, Yoshino-dai, Sagamihara, Kanagawa 229, Japan
   3 Institute of Space and Astronautical Science, Yoshinodai, Sagamihara, Kanagawa 229, Japan
   3 Institute of Astronomy, Bulgarian Academy of Sciences, 72 Tsarigradsko chaussee, BG-1784 Sofia, Bulgaria
   3 Institut fur Astronomie, Turkenschanzstr. 17, A-1180 Wien, Austria
   3 Institut fuer Theoretische Physik und Sternwarte der Universitat, Kiel, Germany
   3 Institut fuer Astronomie, Zurich, Switzerland
   3 Institut d'Astrophysique de Paris, CNRS, Universite Pierre et Marie Curie, 98bis Bd Arago, F-75014 Paris, France
   3 Institut d'Astrophysique Spatiale, CNRS, Bat. 121
   3 Inst. fuer Theoretische Physik & Sternwarte der Univ, Kiel, Germany
   3 Inst. fuer Astronomie and Atrophysik der Univ Muenchen, Muenchen, Germany
   3 Inst. de Radioastronomia Milimetrica, Granada
   3 Indonesian National Institute of Aeronautics and Space, Djakarta, Indonesia
   3 IPAC, California Institute of Technology, 770 South Wilson Avenue, Mail Code 100-22, Pasadena, CA 91125, USA
   3 INFN - Sezione di Perugia, c/o Dipartimento di Fisica dell'Universita, via A. Pascoli, I-06100 Perugia, Italy
   3 Herzberg Inst. of Astrophysics, Ottawa, Ontario, Canada
   3 Haute Provence, Observatoire, St.-Michel-l'Observatoire, France
   3 Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA
   3 Hahn-Meitner-Institut fuer Kernforschung Berlin GmbH, Berlin, West Germany
   3 Gulf Research and Development Co., Pittsburgh, PA
   3 Grumman Aerospace Corp., Bethpage, N.Y.
   3 Gosudarstvennyj Astronomicheskij Inst., Moscow, Russia
   3 Goeteborg Univ. and Chalmers Univ. of Tech., Goeteborg, Sweden
   3 Glavnaia Astronomicheskaia Observatoriia, Goloseevo, Ukrainian SSR
   3 Gesellschaft fuer Schwerionenforschung mbH, Darmstadt, West Germany
   3 Florida International Univ., Miami, FL, US
   3 Florida Atlantic University, Boca Raton, Fla.
   3 Five College Radio Observatory, Massachusetts Univ., Amherst, MA, US
   3 Finnish Meteorological Institute, Helsinki, Finland
   3 Fermi National Accelerator Lab., Batavia, IL, US
   3 Facultes Universitaires Notre-Dame de la Paix, Namur, Belgium
   3 European Space Agency, Noordwijk, Netherlands
   3 European Southern Observatory, Munich, Federal Republic of Germany
   3 European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei Munchen, Germany
   3 European Laboratory for Non-Linear Spectroscopy (LENS), Firenze, Italy
   3 Eureka Scientific, Inc., Oakland, CA, US
   3 Erindale College, Mississauga, Canada
   3 Erevanskii Politekhnicheskii Institut, Yerevan, Armenian SSR
   3 Erevanskii Fizicheskii Institut, Yerevan, Armenian SSR
   3 Electronic Engineering Laboratories, University of Kent at Canterbury, CT2 7NT, UK
   3 Ecole Normale Superieure de Jeunes Filles, Montrouge, Hauts-de-Seine, France
   3 Ecole Normale Superieure de Jeunes Filles
   3 Eastern Centre for Research in Astrophysics, Institute of Radio Physics and Electronics, 92, A.P.C. Road, Calcutta 700009, India
   3 ESTEC, Astrophysics Div., Noordwijk, Netherlands
   3 ESA, Space Science Div., Noordwijk, Netherlands
   3 ESA IUE Observatory, Apartado 50727, 28080-Madrid, Spain
   3 Dwingeloo, Radiosterrewacht, Dwingeloo, Netherlands
   3 Dunsink Observatory, Dublin, Republic of Ireland
   3 Dublin Institute for Advanced Studies, 5 Merrion Square, Dublin 2, Ireland
   3 Dominion Radio Astrophysical Observatory, Herzberg Institute of Astrophysics, National Research Council, PO Box 248, Penticton, BC V2A 6K3, Canada
   3 Dipartimento di Fisica, II Universita di Roma `Tor Vergata', Via della Ricerca Scientifica 1, I-00133 Roma, Italy
   3 Department of Pure and Applied Physics, The Queen's University of Belfast, Belfast BT7 1NN, Ireland
   3 Department of Pure and Applied Physics, The Queen's University of Belfast, Belfast BT7 1NN
   3 Department of Physics, Wichita State University, Wichita, KS 67260-0032, USA
   3 Department of Physics, University of Western Ontario, London, Ontario, N6A 3K7, Canada
   3 Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
   3 Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan
   3 Department of Physics, University of Durham, Science Laboratories, South Road, Durham DH1 3LE
   3 Department of Physics, University of California, Santa Barbara, CA 93106, USA
   3 Department of Physics, University College, ADFA, The University of New South Wales, Canberra, 2600, ACT, Australia
   3 Department of Physics, University College, ADFA, The University of NSW, Campbell 2600, ACT, Australia
   3 Department of Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
   3 Department of Physics, Queen's University, Kingston, Ontario, K7L 3N6, Canada
   3 Department of Physics, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH, UK
   3 Department of Physics, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan
   3 Department of Physics, Kyoto University, Kyoto 606-01, Japan
   3 Department of Physics, 37-624B MIT, Cambridge, MA 02139, USA
   3 Department of Physics and Mathematical Physics, University of Adelaide, SA 5005, Australia
   3 Department of Physics and Astronomy, University of Wales College of Cardiff, Cardiff CF2 3YB, UK
   3 Department of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS
   3 Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
   3 Department of Physics and Astronomy, University of Oklahoma, Norman, OK 73019, USA
   3 Department of Physics and Astronomy, The University, Manchester M13 9PL, UK
   3 Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA
   3 Department of Physics and Astronomy, Johns Hopkins University, 3400 N. Charles Street, Baltimore MD 21218, USA
   3 Department of Physics Technion - Israel Institute of Technology, 32000 Haifa, Israel
   3 Department of Mathematics and Statistics, University of Northumbria at Newcastle, Ellison Building, Newcastle upon Tyne NE1 8ST, UK
   3 Department of Mathematics and Statistics, University of Edinburgh, King's Buildings, Edinburgh EH9 3JZ
   3 Department of Earth Science and Astronomy, Graduate School of Arts and Sciences, University of Tokyo, Komaba, Meguro, Tokyo 153, Japan
   3 Department of Earth Science & Astronomy, College of Arts & Sciences, University of Tokyo, Komaba, Meguro, Tokyo 153, Japan
   3 Department of Chemistry, University of Georgia, Athens, GA 30602, USA
   3 Department of Astrophysics, Oxford University, Keble Road, Oxford OX1 3RH
   3 Department of Astrophysics, Nuclear Physics Laboratory, Oxford OX1 3RH, UK
   3 Department of Astrophysics, Nagoya University, Furo-cho, Chikusa, Nagoya 464, Japan
   3 Department of Astronomy, University of Minnesota, Minneapolis, MN 55455, USA
   3 Department of Astronomy, University of Maryland, College Park, MD 20742, USA
   3 Department of Astronomy, University of California, Berkeley, CA 94720, USA
   3 Department of Astronomy, Ohio State University, 174 West 18th Avenue, Columbus, OH 43210, USA
   3 Department of Astronomy and Astrophysics, Goteborg University and Chalmers University of Technology, 41296 Goteborg, Sweden
   3 Departement de Physique, Observatoire du Monte Megantic, Universite de Montreal, Montreal, Quebec, H3C 3J7 Canada
   3 Departement de Physique, Observatoire du Mont Megantic, Universite de Montreal, Montreal, Quebec H3C 3J7, Canada
   3 Departamento de Fisica Aplicada, E.U.I.T. Industrial, Universidad Politecnica de Madrid, Ronda de Valencia 3, E-28012 Madrid, Spain
   3 Departamento de Astronomia y Astrofisica, Universidad de Valencia, 46100 Burjassot, Valencia, Spain
   3 Darmstadt, Technische Hochschule, Federal Republic of Germany
   3 DAEC, Observatoire de Paris-Meudon, 92195 Meudon Principal Cedex, France
   3 DAEC, Observatoire de Paris, F-92195 Meudon Principal Cedex, France
   3 Council for Scientific and Industrial Research, National Institute for Telecommunications Research, Johannesburg, Republic of South Africa
   3 Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warsaw, Poland
   3 Copenhagen, University Observatory, Copenhagen, Denmark
   3 Copenhagen Univ. Observatory, Copenhagen K, Denmark
   3 Cooperative Institute for Research in Environmental Science, Boulder, CO
   3 Consejo Nacional de Investigaciones Cientificas y Tecnicas, Buenos Aires
   3 Connecticut College, New London, CT, US
   3 Communications Research Lab., Koganei, Tokyo, Japan
   3 Communications Research Lab., Koganei, Japan
   3 Commonwealth Scientific and Industrial Research Organization, National Measurement Laboratory, Sydney, Australia
   3 Commonwealth Scientific and Industrial Research Organization, Div. of Applied Physics, Lindfield, New South Wales, Australia
   3 Comision Nacional de Investigaciones Espaciales, San Miguel, Argentina
   3 Chicago Adler Planetarium, Chicago, IL
   3 Chemical and Physical Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF
   3 Chalmers Univ. of Tech., Goeteborg, Sweden
   3 Centro Astronomico de Yebes (IGN), Guadalajara, Spain
   3 Centre de Recherches en Physique de l'Environnement Terrestre et Planetaire, Issy-les-Moulineaux, France
   3 Centre Europeen de Recherche et de Formation Avancee en Calcul Scientifique, Toulouse, France
   3 Center for Radiophysics and Space Research, and Departments of Astronomy and Physics, Cornell University, Ithaca, New York 14853, USA
   3 Center for Advanced Research in Space Optics, Italy
   3 Carter Observatory, PO Box 2909, Wellington, New Zealand
   3 Cambridge University, The Observatories, Cambridge, England
   3 California, University, Los Angeles and Santa Barbara
   3 California, University, Lawrence Livermore National Laboratory, Livermore, CA
   3 California, University, Lawrence Berkeley Laboratory, Berkeley, CA
   3 California Institute of Technology, Jet Propulsion Laboratory, Theoretical Physics and Cosmology Group, Pasadena, Calif.
   3 California Institute of Technology, Jet Propulsion Laboratory, Theoretical Physics and Cosmology Group, Pasadena, CA
   3 Calern, Observatoire, Saint-Vallier-de-Thiey, Alpes-Maritimes, France
   3 CSIC, Centre d'Estudis Avancats, Blanes
   3 CNR, Unita di Ricerca di Padova-Asiago, Padua, Italy
   3 CNR, Laboratorio di Cosmogeofisica, Turin, Italy
   3 CNR, Istituto di Ricerca sulle Onde Elettromagnetiche, Florence, Italy
   3 CNR, Istituto di Fisica dello Spazio Interplanetario, Frascati
   3 CNR, Istituto di Fisica Cosmica e Applicazioni dell'Informatica, Palermo, Italy
   3 CNR, Istituto di Fisica Cosmica con Applicazioni all'Informatica, Palermo, Italy
   3 CNR, Gruppo Nazionale per l'Astronomia, Florence, Italy
   3 CNR, Gruppo Nazionale per l'Astronomia, Catania, Italy
   3 CE Saclay D.A.P.N.I.A. Service d' Astrophysique, Gif sur Yvette, France
   3 CCAST, Center of Astronomy and Astrophysics, Beijing
   3 C. E. Kenneth Mees Observatory, Bristol Springs, N.Y.
   3 Bureau International des Poids et Mesures, Sevres, France
   3 Brockport State College, Brockport, N.Y.
   3 British Aerospace Australia, Ltd., Salisbury
   3 Blackett Laboratory, Imperial College, London SW7 2BZ
   3 Berkeley Research Associates, Inc., Berkeley, CA
   3 Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing 100080, China
   3 Battelle Pacific Northwest Laboratories, Richland, WA
   3 Battelle Northwest Laboratories, Richland, Wash.
   3 Australian National Radio Astronomy Observatory, Parkes, New South Wales, Australia
   3 Atomic Energy Research Establishment, Nuclear Physics Div., Harwell, Berks., England
   3 Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
   3 Astrophysikalisches Inst., Potsdam, Germany
   3 Astrophysics, Oxford University, Keble Road, Oxford OX1 3RH, UK
   3 Astrophysics Group, Electrical Engineering, Electronics and Physics, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK
   3 Astrophysics Group, Department of Physics, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK
   3 Astrophysics Group, Blackett Laboratory, Imperial College, London SW7 2BZ
   3 Astrophysical Institute of Potsdam, An der Sternwarte 16, Potsdam, D-14482 Germany
   3 Astronomy and Astrophysics Division, Physical Research Laboratory, Navrangpura, Ahmedabad - 380 009, India
   3 Astronomy Department, University of Cape Town, Rondebosch 7700, Cape Town, South Africa
   3 Astronomy Department, University of California, Los Angeles, CA 90024, USA
   3 Astronomy Centre, Pedagogical University, Lubuska 2, 65-265 Zielona Gora, Poland
   3 Astronomy Centre, Division of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, UK
   3 Astronomy Centre, Division of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH
   3 Astronomisches Institut, Universitat Basel, Venusstrasse 7, CH-4102 Binningen, Switzerland
   3 Astronomisches Institut der Universitat Munster, Munster, Germany
   3 Astronomisches Institut der Universitaet Basel, Binningen, Switzerland
   3 Astronomisches Institut der Ruhr-Universitat, D--44780 Bochum, Germany and Optikzentrum NRW, Universitatsstrasse 142, D--44799 Bochum, Germany
   3 Astronomical Instituut 'Anton Pannekoek', Amsterdam, Netherlands
   3 Astronomical Institute, St Petersburg State University, Bibliotechnaya pl. 2, 198904 St Petersburg Peterhof, Russia
   3 Astronomical Institute ``Anton Pannekoek'', University of Amsterdam, Kruislaan 403, NL--1098 SJ Amsterdam, The Netherlands
   3 Astronomical Institute ``Anton Pannekoek'', University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
   3 Astronomical Institute `Anton Pannekoek', University of Amsterdam, Center for High Energy Astrophysics, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
   3 Astronomical Inst., Academy of Sciences, Ondrejov, Czech Republic
   3 Astrofisico di Arcetri, Firenze, Italy
   3 Appalachian State University, Boone, N.C.
   3 Anglo-Australian Observatory, Coonabarabran, New South Wales 2357, Australia
   3 Andalucia, Inst. de Astrofisica, Granada
   3 Akademiia Nauk SSSR, Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Irkutsk, USSR
   3 Affiliated to the Space Sciences Division of ESA, Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
   3 Academy of Sciences of the Ukraine, Kiev, Ukraine
   3 Abastumani Astrophysical, Tbilisi, Republic of Georgia
   2 and Member of Carrera del Investigador Cientifico, CONICET, Buenos Aires, Argentina
   2 X-ray Astronomy Group, Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK
   2 Wroclaw, Uniwersytet, Obserwatorium, Wroclaw, Poland
   2 Wollongong, University, Wollongong, New South Wales, Australia
   2 Wise Observtory, Sackler Faculty of Exact Sciences, Tel Aviv University, Israel
   2 Williams College, Williamstown, MA, US
   2 Wilhelmshaven, Fachhochschule, Federal Republic of Germany
   2 Westfalische Wilhelms-Univ., Muenster, Germany
   2 Western Washington University, Bellingham, Wash.
   2 Western Connecticut State University, Danbury, CT
   2 Western Australian Institute of Technology, Bentley, Australia
   2 Westerbork, Radiosterrewacht, Zwiggelte, Netherlands
   2 Wellington, Victoria University, Wellington, New Zealand
   2 Washburn Observatory, Wisconsin Univ., Madison, WI, US
   2 Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
   2 WIP-Projekt Astrometrie der Universitat Postdam, An der Sternwarte 16, D-14482 Potsdam, Germany
   2 Villanova University, Astronomy Department, Villanova, PA 19085, USA
   2 University of Toronto, Mississauga, Ontario, Canada
   2 University of Southampton, Department of Physics, Highfield, Southampton SO17 1BJ
   2 University of Oklahoma, Department of Physics and Astronomy, Norman, OK 73019, USA
   2 University of Melbourne, School of Physics, Parkville, VIC 3052, Australia
   2 University of Manitoba, Winnipeg, Manitoba, Canada
   2 University of Electro-Communications, Chofu, Tokyo, Japan
   2 University of Edinburgh, Department of Mathematics and Statistics, King's Buildings, Edinburgh EH9 3JZ, UK
   2 University of Durham, Science Laboratories, South Road, Durham DH1 3LE, UK
   2 University of Durham, Department of Physics, South Road, Durham DH1 3LE
   2 University of Chicago, Department of Astronomy and Astrophysics, 5640 S. Ellis, Chicago, IL 60637, USA
   2 University of Chicago, 5640 S. Ellis Ave., Chicago, IL 60637 USA
   2 University of Cape Town, Rondebosch, South Africa
   2 University of Canterbury, Christchurch, New Zealand
   2 University of Amsterdam, Amsterdam, The Netherlands
   2 University College, Galway, Republic of Ireland
   2 University College, Belfield, Dublin, Ireland
   2 University College, Australian Defence Force Academy, Campbell, Australia
   2 University College of Wales, Aberystwyth, Wales
   2 Universities Space Research Association NASA/GSFC, Greenbelt, MD 20711, USA
   2 Universite Libre de Bruxelles, Institut d'Astronomie et d'Astrophysique, Campus Plaine CP 226, Boulevard du Triomphe, B-1050, Bruxelles, Belgium
   2 Universitaets-Sternwarte, Jena, German Democratic Republic
   2 Universita degli Studi di Milano, Via Celoria 16, 20133, Milano, Italy and Osservatorio Astronomico di Brera, Via Brera 28, 20121 Milano, Italy
   2 Universidade Federal do Rio de Janeiro, Instituto de Fisica, Rio de Janeiro - RJ - Brasil - 21943
   2 Universidad de las Islas Baleares, Palma de Mallorca, Spain
   2 Universidad Central de Venezuela, Caracas, Venezuela
   2 Univ. of the West Indies, Trinidad, West Indies
   2 Univ. of North Carolina at Chapel Hill, Chapel Hill, NC, US
   2 Univ. of Massachusetts at Amherst, Amherst, MA, US
   2 Univ. of Manchester, Macclesfield, U.K.
   2 Univ. of Manchester, Macclesfield, Cheshire, UK
   2 Univ. of Cape Town, Cape Town, South Africa
   2 Univ. Central de Venezuela, Caracas, Venezuela
   2 Uniting Church in Australia, Hazelbrook
   2 United Kingdom Infrared Telescope, Hilo, HI
   2 USAF, Space Div., Los Angeles Air Force Station, CA
   2 URA 1280 du CNRS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
   2 UKAEA Government Division, Fusion, Culham, Abingdon, Oxon OX14 3DB, UK
   2 UCO/Lick Observatory, University of California, Santa Cruz, California 95064, USA
   2 UCO/Lick Observatory and Board of Studies in Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
   2 U.S. Navy, Laboratory for Cosmic Ray Physics, Washington, D.C.
   2 U. S. Naval Observatory Time Service Department, Washington, DC, US
   2 Tuorla Observatory, Turku Univ., Pikkio, Finland
   2 Tsing Hua University, Hsinchu, Republic of China
   2 Tremsdorf Solar Radio Astronomy, Tremsdorf, Germany
   2 Tokyo Metropolitan University, Hachioji, Japan
   2 Tokyo Gakugei University, Koganei, Tokyo, Japan
   2 Thuringer Landessternwarte Tautenburg, D-07778 Tautenburg, Germany
   2 Theoretische Astrophysik der Univ. Tuebingen, Tuebingen, Germany
   2 Theoretical Physics, 1 Keble Road, Oxford OX1 3NP
   2 Theoretical Astrophysics, California Institute of Technology, Mail Stop 130- 33, Pasadena, CA 91125, USA
   2 Theoretical Astrophysics 130-33, Caltech, Pasadena CA 91125, USA
   2 The University of Manchester, NRAL, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK
   2 The University of Calgary, Calgary, Canada
   2 The Univ. of Manchester, Macclesfield, Cheshire, UK
   2 The Physics Department, The University of Queensland, QLD 4072, Australia
   2 The Physics Department, The University of Queensland, Brisbane, QLD 4072, Australia
   2 The Niels Bohr Institute for Astronomy, Physics and Geophysics, Astronomical Observatory, Brorfeldevej 23, DK-4340, Tollose, Denmark
   2 The Institute of Physical and Chemical Research (RIKEN), Hirosawa, Wako, Saitama 351-01, Japan
   2 The Australian Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 2121, Australia
   2 The Australian National University, Private Bag, Weston Creek, Australia
   2 The Astrophysical Theory Centre, School of Mathematical Sciences, The Australian National University, Canberra, ACT 0200, Australia
   2 Texas, University, McDonald Observatory, Austin, Tex.
   2 Texas, University, McDonald Observatory, Austin, TX
   2 Teoretisk Astrofysik Center, Danmarks Grundforskningsfond, and Institut for Fysik og Astronomi, Aarhus Universitet, DK-8000 Aarhus C, Denmark
   2 Technion Research and Development Foundation, Ltd., Haifa
   2 Tata Institute of Fundamental Research, Radio Astronomy Centre, Udhagamandalam, India
   2 Tata Institute of Fundamental Research, National Centre for Radio Astrophysics, Post Bag No. 3, Ganeshkhind, Pune 411007, India
   2 Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay 400005, India
   2 TRW, Inc., TRW Space and Technology Group, Redondo Beach, CA
   2 Superconducting Super Collider Lab., Dallas, TX
   2 Supercomputing Facility, Australian National University, Canberra, ACT 0200, Australia
   2 Sudbury, Laurentian University, Sudbury, Ontario, Canada
   2 Stichting Ruimteonderzoek Nederland, Laboratorium voor Ruimteonderzoek, Utrecht, Netherlands
   2 Stichting Astronomisch Onderzoek in Nederlands, Amsterdam, Netherlands
   2 Steward Observatory, University of Arizona, 2nd & Cherry Avenue, Tucson, AZ 85721, USA
   2 Sterrewacht Leiden, Postbus 9513, 2300 RA Leiden, The Netherlands (vdbosch@strw.strw.leidenuniv.nl)
   2 Sterrewacht Leiden, P.O. Box 9513, 2300 RA Leiden, The Netherlands
   2 Sterrewacht Leiden, Huygens Laboratory, PO Box 9513, 2300 RA Leiden, The Netherlands
   2 Sterrenkundig Observatorium, Universiteit Gent, Gent, Belgium
   2 Sterrekundig Instituut Utrecht, Utrecht, The Netherlands
   2 Sternwarte Babelsberg, Potsdam, German Democratic Republic
   2 Sternwarte Babelsberg, Potsdam, Federal Republic of Germany
   2 Sternberg Astronomical Institute, University of Moscow, Moscow, Russia
   2 Sternberg Astronomical Institute, Moscow University, Universitetskij Prospect 13, Moscow 119899, Russia
   2 Sternberg Astronomical Institute, Moscow University, Moscow, 119899, Russia
   2 Stazione Astronomica Internazionale di Latitudine, Cagliari, Italy
   2 State University of New York at Stony Brook, Stony Brook, NY, US
   2 St. Petersburg University, St. Petersburg, Russia
   2 St. Petersburg State Univ., St. Petersburg, Russia
   2 St. Patrick's College, Maynooth, County Kildare, Ireland
   2 Space and Astrophysics Division, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, UK
   2 Space Telescope-European Coordinating Facility, Muenchen, Germany
   2 Space Telescope European Coordinating Facility, Garching, Federal Republic of Germany
   2 Space Telescope European Coordinating Facility
   2 Space Sciences Laboratory, University of California, Berkeley, CA 94720, USA
   2 Space Science Division, NASA Ames Research Center, MS 245-3, Moffett Field, CA 94035, USA
   2 Space Science Dept. of ESA, Noordwijk, The Netherlands
   2 Space Science Department, Rutherford Appleton Laboratory, Chilton OX11 0QX
   2 Space Science Department of ESA/ESTEC, Noordwijk, Netherlands
   2 Space Science Building, Cornell University, Ithaca, NY 14853, USA
   2 Space Research Unit, Physics Department, Potchefstroom University for CHE, Private Bag X6001, Potchefstroom 2520, South Africa
   2 Space Research Institute, Russian Academy of Sciences, Moscow, Russia
   2 Space Research Institute, Academy of Sciences, Profsoyuznaya 84/32, 117810 Moscow, Russia
   2 Space Research Groningen, PO Box 800, NL 9700-AV Groningen, The Netherlands
   2 Space Research Centre, Polish Academy of Sciences, Kopernika 11, 51-622 Wroclaw, Poland
   2 Southeast Missouri State University, Cape Girardeau, MO
   2 South West Jiaotong University, Chengdu, China
   2 Sonnenobservatorium Einsteinturm, Telegrafenberg, Germany
   2 Sonnenobservatorium Einsteinturm, Potsdam, Germany
   2 Sonnenobservatorium Einsteinturm, Potsdam, German Democratic Republic
   2 Solar Physics Research Corporation, Tucson, AZ, US
   2 Societat Catalana de Fisica, Barcelona
   2 Smithsonian Astrophysical Observatory and Harvard-Smithsonian Centre for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
   2 Slovak Academy of Sciences, Tatranska Lomnica, Slovakia
   2 Slovak Academy of Sciences, Astronomical Institute, Tatranska Lomnica, Czechoslovakia
   2 Slovak Academy of Sciences, Astronomical Institute, Bratislava, Czechoslovakia
   2 Siding Spring Observatory, Coonabarabran, New South Wales, Australia
   2 Severn Communications Corp., Millersville, MD
   2 Service de Physique Nucleaire, Centre d'Etudes de Bruyeres-le-Chatel, Montrouge, Hauts-de-Seine, France
   2 Service d'Astrophysique, Centre d'Etudes de Saclay, 91191 Gif-sur-Yvette Cedex, France
   2 Search for Extraterrestrial Intelligence Institute, Moffett Field, CA
   2 Search for Extraterrestrial Intelligence Institute, Los Altos, CA
   2 Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126, Pisa, Italy
   2 Science and Engineering Research Laboratory, Tokyo, Japan
   2 Science Institute, University of Iceland, Dunhaga 3, IS-107 Reykjavik, Iceland
   2 Science Applications, Inc., McLean, Va.
   2 Science Applications International Corporation, San Diego, CA, US
   2 Science Applications International Corp., San Diego, CA, US
   2 School of Science, Sheffield Hallam University, Sheffield S1 1WB, UK
   2 School of Physics, University of New South Wales, Sydney, NSW 2052, Australia
   2 School of Physics, University of Melbourne, Parkville 3052, Australia
   2 School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9SS
   2 School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS, UK
   2 School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS, UK
   2 School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978, Israel
   2 School of Physics and Astronomy, Tel Aviv University, Ramat Aviv 69978, Israel
   2 School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel-Aviv 69978, Israel
   2 School of Physics and Astronomy and the Wise Observatory, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel
   2 School of Physics and Astronomy and the Wise Observatory <fnr rid="fn2"> , Tel-Aviv University, Tel-Aviv 69978, Israel
   2 School of Computing and Mathematical Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK
   2 School of Chemistry, The University, Bristol BS8 1TS.
   2 School of Chemistry, Cantock's Close, University of Bristol, Bristol BS8 1TS, UK
   2 Scarborough College, Westhill, Ontario, Canada
   2 Scarborough College, West Hill, Ontario
   2 Santa Cruz Institute for Particle Physics, University of California, Santa Cruz, CA 95064, USA
   2 Saint Patrick's College, Maynooth, Ireland
   2 ST-ECF/ESO, Karl-Schwarzschild-Strasse 2, D-85740 Garching bei Munchen, Germany
   2 SISSA-International School of Advanced Studies, Trieste, Italy
   2 SISSA - International School of Advanced Studies, Trieste, Italy
   2 SAX, Science Data Center, ASI, Viale Regina Margherita 202, I-00198 Roma, Italy
   2 Rutherford Appleton Laboratory, Chilton, Oxfordshire OX11 0QX
   2 Rutgers, the State Univ. of New Jersey, Piscataway, NJ, US
   2 Rutgers, State University of New Jersey, Piscataway, NJ, US
   2 Russian Pedagogical University, St. Petersburg, Russia
   2 Royal Observatory, Coonabarabran, New South Wales, Australia
   2 Royal Institute of Technology, Stockholm, Sweden
   2 Royal Holloway and Bedford New College, Egham, England
   2 Royal Holloway College, Egham, Surrey, England
   2 Royal Greenwich Observatory, Apartado de Correos 321, Santa Cruz de la Palma, 38780 Tenerife, Canary Islands, Spain
   2 Royal Greenwich Observatory, Apartado de Correos 321, E-38780 Santa Cruz de La Palma, Islas Canarias, Spain
   2 Royal Greenwich Observatory, Apartado de Correos 321, 38780 Santa Cruz de La Palma, Tenerife, Islas Canarias, Spain
   2 Royal Greenwich Observatory, Apartado 321, Santa Cruz de la Palma, 38780 Tenerife, Canary Islands, Spain
   2 Royal Australian Air Force Academy, Parkville, Victoria, Australia
   2 Rossiiskaia Akademiia Nauk, Institut Prikladnoi Matematiki, Moscow, Russia
   2 Rockwell Shuttle Operations Co., Houston, TX
   2 Rockwell Power Systems, Albuquerque, NM, US
   2 Rockwell International Science Center, Thousand Oaks, CA
   2 Ritsumeikan University, Kusatsu, Shiga 525, Japan
   2 Research and Data Systems Corp., Greenbelt, MD
   2 Remote Sensing Division, Code 7210, Naval Research Laboratory, Washington, DC 20375, USA
   2 Raman Research Institute, Sadashivanagar, Bangalore 560080, India
   2 Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560080, India
   2 Radiosterrewacht Westerbork, Zwiggelte, Netherlands
   2 Radioastrophysical Observatory, Turgeneva 19, Riga LV-1527, Latvia
   2 Radioastrophysical Observatory, Latvian Academy of Sciences, Turgeneva iela 19, LV-1527 Riga, Latvia
   2 Radioastronomisches Institut, Universitat Bonn, Auf dem Hugel 71, 53121 Bonn, Germany
   2 Radioastronomisches Institut der Univ. Bonn, Bonn, Germany
   2 Radio Sterrewacht, Westerbork, Netherlands
   2 Radio Sterrewacht, Dwingeloo, Postbus 2, 7990 AA Dwingeloo, The Netherlands
   2 Radio Sterrewacht, Dwingeloo, Netherlands
   2 Racach Institute for Physics, The Hebrew University, Jerusalem 91904, Israel
   2 RAM Granada, Avenida Divina Pastora 7, Nucleo Central, 18012 Granada, Spain
   2 Queen's University at Kingston, Kingston, Ontario, Canada
   2 Queen's Univ. of Belfast, Belfast, Ireland
   2 Queen 's Univ. of Belfast, Belfast, NI, UK
   2 Polytechnic Inst. & State Univ., Blacksburg, VA, US
   2 Planetary Science Institute, Astrophysics Group, 620 North 6th Avenue, Tucson, Arizona 85705, USA
   2 Physikalisch-Meteorologisches Observatorium, Davos, Switzerland
   2 Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS, UK
   2 Physics and Astronomy Department, University of California, Los Angeles, California 90024, USA
   2 Physics and Astronomy Department, University of California, Los Angeles, CA 90095-1562, USA
   2 Physics Department, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
   2 Physics Department, University of Rome, Piazzale Aldo Moro 2, 00185 Rome, Italy
   2 Physics Department, University of Crete, P.O.Box 2208, GR 710 03, Heraklion, Crete, Greece
   2 Physics Department, The University, Southampton SO17 1BJ, UK
   2 Physics Department, The University, Durham DH1 3LE, UK
   2 Physics Department, The University, Durham DH1 3LE
   2 Physics Department, The University of Queensland, 4072, Australia
   2 Physics Department, Southampton University, University Road, Southampton SO9 5NH
   2 Physics Department, Southampton University, University Road, Southampton SO17 1BJ, UK
   2 Physics Department, Queen's University, Kingston, Ontario, Canada
   2 Physics Department, Queen Mary & Westfield College, Mile End Road, London E1 4NS
   2 Phillips Laboratory, Hanscom AFB, Massachusetts, US
   2 Oxford University, University Observatory, Oxford, England
   2 Oxford University Physics Department, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH, UK
   2 Osterreichische Akademie der Wissenschaften, Graz, Austria
   2 Osservatorio Astronomico, Via dell'Osservatorio 5, I-35122 Padova, Italy
   2 Osservatorio Astronomico, Strada Osservatorio 20, I-10025, Pino Torinese, Italy
   2 Osservatorio Astronomico di Trieste, Via GB Tiepolo, 11, I-34131 Trieste, Italy
   2 Osservatorio Astronomico di Trieste, Via GB Tiepolo 11 34131, Trieste, Italy
   2 Osservatorio Astronomico di Roma, via dell'Osservatorio, I-00040, Monteporzio, Italy
   2 Osservatorio Astronomico di Roma, via dell'Osservatorio, I-00040 Monteporzio, Italy
   2 Osservatorio Astronomico di Roma, via dell'Osservatorio, I- 00044 Monteporzio-Catone, Italy
   2 Osservatorio Astronomico di Roma, 00040 Monte Porzio Catone (Roma), Italy
   2 Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy
   2 Osservatorio Astronomico di Padova, Sede di Asiago, I-36032 Asiago (VI), Italy
   2 Osservatorio Astronomico di Monte Mario, Viale del Parco Mellini 84, 00316 Roma, Italy
   2 Osservatorio Astronomico di Collurania, I-64100 Teramo, Italy
   2 Osservatorio Astronomico di Capodimonte, via Moiariello 16, I-80131 Napoli, Italy
   2 Osservatorio Astronomico di Brera, Via Bianchi 46, I-22055 Merate (LC), Italy
   2 Osservatorio Astron. di Torino, Pino Torinese, Italy
   2 Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-52015 Firenze, Italy
   2 Osservatorio Astrofisico di Arcetri, Firenze, Germany
   2 Organisation Europeenne pour la Recherche Nucleaire, Geneva, Switzerland
   2 Orange Free State, University, Bloemfontein, Republic of South Africa
   2 Open University Department of Physics, Walton Hall, Milton Keynes MK7 6AA
   2 Onsala Space Observatory, S-43900 Onsala, Sweden
   2 Obserwatorium Astronomiczne, Uniwersytet Jagiellonski, Krakow, Poland
   2 Observatorium fuer Solare Radioastronomie, Tremsdorf, German Democratic Republic
   2 Observatorium Lustbuehel, Graz, Austria
   2 Observatorium Bosscha, Lembang, Indonesia
   2 Observatorio del Roque de los Muchachos, La Palma, Spain
   2 Observatorio de Roque de los Muchachos, Santa Cruz de la Palma, Spain
   2 Observatorio Nacional de Fisica Cosmica, San Miguel, Argentina
   2 Observatorio Astronomico, Universidad Nacional de Cordoba, Laprida 854, 5000 Cordoba, Argentina
   2 Observatorio Astronomico de La Plata, Paseo del Bosque, 1900 La Plata, Argentina
   2 Observatorio Astronomico Nacional de Cerro Calan, Santiago, Chile
   2 Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena CA 91101-1292, USA
   2 Observatorie de Paris et Univ. Paris, Meudon Cedex, France
   2 Observatorie de Haute-Provence, St. Michel, France
   2 Observatoire du Pic du Midi, Bagneres de Bigorre, France
   2 Observatoire du Calern, Saint-Vallier-de Thiey, France
   2 Observatoire de la Cote d'Azur, Saint-Vallier-de-Thiey, France
   2 Observatoire de Strasbourg, URA 1280 (CNRS), 11 Rue de l'Universite, 67000 Strasbourg, France
   2 Observatoire de Paris-Meudon (DAEC), 92195 Meudon Cedex, France
   2 Observatoire de Paris, DAEC, 92195 Meudon Principal Cedex, France
   2 Observatoire de Lyon, F69230 Saint-Genis Laval, France
   2 Observatoire de Haute-Provence (CNRS), F-04870 Saint-Michel l'Observatoire, France
   2 Observatoire Midi-Pyrenees, UMR No. 5572 (CNRS), 14 Avenue Edouard Belin, 31400 Toulouse, France
   2 Observatoire Midi-Pyrenees, Laboratoire d'Astrophysique de Toulouse, UMR. 5572 du CNRS, 14 Avenue Edouard Belin, 31400 Toulouse, France
   2 Observatoire Midi-Pyrenees, 14 avenue E. Belin, Toulouse 31400, France
   2 Observatoire Astronomique-URA, Strasbourg, France
   2 Observatoire Astronomique, URA 1280 du CNRS, 11 Rue de l'Universite, 67000 Strasbourg, France
   2 Observatoire Astronomique, UA 1280 CNRS, 11 rue de l'Universite, F-67000 Strasbourg, France
   2 Observatoire Astronomique du Mont Megantic, Quebec
   2 Observatoire Astronomique du Mont Megantic, Megantic, Quebec, Canada
   2 Observatoire Astronomique de Lyon (CRAL), F-69561 Saint Genis Laval Cedex, France
   2 Observatoire Astrometrique du Calern, Saint-Vallier-de-Thiey, France
   2 OBSERVATOIRE ROYAL DE BELGIQUE, AVENUE CIRCUL
   2 Nuffield Radio Astronomy Laboratories, University of Manchester, Jodrell Bank, Macclesfield SK11 9DL, Cheshire, UK
   2 Nuffield Radio Astronomy Laboratories, Jodrell Bank, Lower Withington, Macclesfield, Cheshire SK11 9DL, UK
   2 Nuffield Radio Astronomy Laboratories, Jodrell Bank, Lower Withington, Macclesfield, Cheshire SK11 9DL
   2 Nuclear Research Center of the Negev, Beer Sheva, Israel
   2 Norwegian Defence Research Establishment, Kjeller, Norway
   2 Northwestern University, Dearborn Observatory, 2131 Sheridan Road, Evanston, IL 60208, USA
   2 Northern Telecom Electronics, Ltd., Ottawa, Canada
   2 Northern Kentucky University, Highland Heights, Ky.
   2 Northeast Radio Observatory Corp., Westford, Mass.
   2 Nizamiah and Japal-Rangapur Observatories, Hyderabad, India
   2 Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen, Denmark
   2 Niels Bohr Institute for Astronomy, Physics, and Geophysics
   2 Niels Bohr Institute for Astronomy, Physics, Geophysic, Tollose, Denmark
   2 Niels Bohr Institute for Astronomy, Brorfeldevej, Denmark
   2 Nicolaus Copernicus University, Torun, Poland
   2 New Mexico Institute of Mining and Technology, Soccoro
   2 New Mexico Inst. of Mining and Tech., Socorro, NM, US
   2 National Tsing Hua University, Hsinchu, Republic of China
   2 National Solar Observatory, Sacramento Peak, NM, US
   2 National Research Council, Herzberg Institute of Astrophysics, Victoria, British Columbia, Canada
   2 National Research Council of Canada, Div. of Physics, Ottawa
   2 National Research Council of Canada, British Columbia, Canada
   2 National Optical Astronomy Observatories, PO Box 26732, Tucson, AZ 85726, USA
   2 National Optical Astronomical Observatories, Tucson, AZ, US
   2 National Laboratory for High-Energy Physics, Tsukuba, Japan
   2 National Inst. for Fusion Science, Nagoya, Japan
   2 National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune University Campus, Ganeshkind, Pune 411007, India
   2 National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, PO Box 3, Ganeshkhind, Pune University Campus, Pune 411007, India
   2 National Centre for Radio Astrophysics, TIFR, Poona University Campus, Post Bag No. 3, Ganeshkhind, Pune 411007, India
   2 National Central University, Chungli, Republic of China
   2 National Central University, Chung-Li, Republic of China
   2 National Central University, Chung-Li, Nationalist China
   2 National Center for Supercomputing Applications
   2 National Bureau of Standards, National Measurement Laboratory, Washington, DC
   2 National Bureau of Standards, Molecular Spectroscopy Div., Washington, D.C.
   2 National Bureau of Standards, Center for Radiation Research, Gaithersburg, MD
   2 National Astronomical Observatory, Osawa, Mitaka, Tokyo 181, Japan
   2 National Astronomical Observatory of Japan, Minamimaki, Nagano, Japan
   2 National Astronomical Observatory Rozhen, PO Box 136, 4700 Smolyan, Bulgaria
   2 Nationaal Instituut voor Kernfysica en Hoge Energie Fysica, Amsterdam, Netherlands
   2 NR - Istituto di Fisica Cosmica e Tecnologie Relative, Via Bassini 15, 20133 Milano, Italy
   2 NORDITA, Blegdamsvej 17, Dk-2100 Copenhagen O, Denmark
   2 NORDITA, Blegdamsvej 17, DK-2100 Copenhagen O, Denmark
   2 NIST, Molecular Physics Div., Gaithersburg, MD
   2 NASA, Infrared Telescope Facility, Honolulu, HI
   2 NASA, Goddard Space Flight Center, Astrochemistry Branch, Greenbelt, Md.
   2 N. Copernicus Astronomical Centre, Polish Academy of Sciences, ul. Bartycka 18, 00-716 Warsaw, Poland
   2 N. Copernicus Astronomical Centre, Bartycka 18, 00-716 Warsaw, Poland
   2 N. Copernicus Astronomical Center, Polish Academy of Sciences, ul. Bartycka 18, 00-716 Warsaw, Poland
   2 Mullard Space Science Laboratory, Department of Space and Climate Physics, University College London, Holmbury St Mary, Dorking RH5 6NT, Surrey, UK
   2 Mullard Space Science Lab., Dorking, Surrey, UK
   2 Muenchen, Technische Universitaet, Munich
   2 Mount Stromlo and Siding Spring Observatories, The Australian National University, Weston Creek, ACT 2611, Australia
   2 Mount Stromlo and Siding Spring Observatories, The Australian National University, Canberra, ACT 0200, Australia
   2 Mount Stromlo and Siding Spring Observatories, Private Bag, Weston Creek PO, ACT 2611, Australia
   2 Mount John Univ. Observatory, Christchurch, New Zealand
   2 Mont Megantic, Observatoire Astronomique, Megantic, Quebec, Canada
   2 Modeles de Physique Mathematique, EP 93 CNRS, Universite de Tours, F-37200, Tours, France
   2 Mizusawa Astrogeodynamics Observatory, Japan
   2 Michigan Technological Univ., Houghton, MI, US
   2 Memorial University of Newfoundland, St. Johns, Newfoundland, Canada
   2 McDonald Observatory and Department of Astronomy, The University of Texas at Austin, TX 78712, USA
   2 Max-Planck-Institut fur extraterrestrische Physik, Aussenstelle Berlin, Rudower Chausee 5, D-12489 Berlin, Germany
   2 Max-Planck-Institut fur Radioastronomie, Postfach 2024, 53010, Bonn, Germany
   2 Max-Planck-Institut fur Radioastronomie, Auf dem Hugel 69, D-53121 Bonn 1, Germany
   2 Max-Planck-Institut fur Physik, Fohringer Ring 6, D-80805 Munchen, Germany
   2 Max-Planck-Institut fur Extraterrestrische Physik, Giessenbachstrasse, D-8046, Garching bei Munchen, Germany
   2 Max-Planck-Institut fur Extraterrestrische Physik, D-85740, Garching bei Munchen, Germany
   2 Max-Planck-Institut fur Extraterrestrische Physik, D-85740 Garching bein Munchen, Germany
   2 Max-Planck-Institut fur Extraterrestrische Physik, D-85740 Garching bei Munchen, Germany
   2 Max-Planck-Institut fur Extraterrestrische Physik, 85740 Garching bei Munchen, Germany
   2 Max-Planck-Institut fur Astrophysik, Postfach 1523,D-85740 Garching, Germany
   2 Max-Planck-Institut fur Astrophysik, Postfach 1523, 85740 Garching, Germany
   2 Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, Postfach 1523, D-85740 Garching bei Munchen, Germany
   2 Max-Planck-Institut fur Astrophysik, D-85740 Garching, Germany
   2 Max-Planck-Institut fur Astronomie, Konigstuhl 17, D-69117, Heidelberg, Germany
   2 Max-Planck-Institut fuer Stroemungsforschung, Goettingen, West Germany
   2 Max-Planck-Gruppe Staub in Sternentstehungsgebieten, Jena, Federal Republic of Germany
   2 Max-Planck-Gesellschaft, Arbeitsgruppe Gravitationstheorie an der Friedrich-Schiller-Universitat Jena, 07743 Jena, Germany
   2 Max-Planck-Gesellschaft zur Foerderung der Wissenschaften
   2 Max-Planck Institut fur Astrophysik, D-85740 Garching, Germany
   2 Max Planck Institut fur Radioastronomie, Auf dem Hugel 69, D-53121 Bonn, Germany
   2 Matra Marconi Space France, Toulouse, France
   2 Mathematisches Institut der Technischen Universitat Munchen, D-80290 Munchen, Germany
   2 Mathematics Department, UMIST, PO Box 88, Manchester M60 1QD, UK
   2 Marconi Maritime Applied Research Laboratory, Cambridge, England
   2 Main Astronomical Observatory, National Academy of Sciences of Ukraine, 252650, Kiev, Goloseevo, Ukraine
   2 Main Astronomical Observatory of Academy of Sciences, Kiev, Ukraine
   2 MacLennan Labs, Toronto, Ontario, Canada
   2 MPG Arbeitsgrupper Staub in Sternentstehungsgebieten, Schillergasschen, Jena
   2 MIT Center for Space Research, 77 Massachusetts Ave #37-627, Cambridge, MA 02139-4307, USA
   2 Lunar and Planetary Laboratory, University of Arizona, Gould-Simpson Building, Tucson, AZ 85721, USA
   2 Los Alamos National Laboratory, Los Alamos, New Mexico, US
   2 Lick Observatory, University of California, Santa Cruz, CA, US
   2 Leuven, Katholieke Univ., Louvain, Belgium
   2 Leopold-Franzens-Univ., Innsbruck, Austria
   2 Lebedev Physical Institute, Leninsky Prospect 53, Moscow B-333, 117924, Russia
   2 Leander J. McCormick Observatory, Charlottesville, VA
   2 Laboratory of Astronomy, Department of Physics, University of Ioannina, Ioannina, Greece
   2 Laboratory for Space Research, Leiden, The Netherlands
   2 Laboratory for High Energy Astrophysics, NASA-Goddard Space Flight Center, Greenbelt, MD 20771, USA
   2 Laboratory for High Energy Astrophysics, Code 668, NASA/Goddard Space Flight Center, Greenbelt, Maryland, MD 20771, USA
   2 Laboratory for High Energy Astrophysics, Code 668, NASA-Goddard Space Flight Center, Greenbelt, MD 20771, USA
   2 Laboratory for Astronomy and Solar Physics, Code 680, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA
   2 Laboratorio de Astrofisica Espacial y Fisica Fund., Madrid, Spain
   2 Laboratoire de Physique des Solides, Toulouse, France
   2 Lab. d'Astrophysique de l'Observatoire de Grenoble, Grenoble, France
   2 Lab. Astrofisica Espacial y Fisica Fundamental, Madrid, Spain
   2 La Palma Observatory, Santa Cruz de la Palma, Spain
   2 Kyoto Pharmaceutical University, Japan
   2 Krakow, Uniwersytet, Obserwatorium Astronomiczne, Poland
   2 Krakow, Uniwersytet, Obserwatorium Astronomiczne, Krakow, Poland
   2 Kitt Peak National Observatory, PO Box 26732, Tucson, AZ 85726, USA
   2 Kernforschungszentrum Karlsruhe GmbH, Karlsruhe, Federal Republic of Germany
   2 Kernforschungszentrum Karlsruhe GmbH, Institut fuer Kernphysik, West Germany
   2 Kernforschungszentrum Karlsruhe GmbH, Germany
   2 Katholieke Univ., Nijmegen, The Netherlands
   2 Katholieke Univ. Leuven, Leuven, Belgium
   2 Kapteyn Sterrewacht, Roden, Netherlands
   2 Kapteyn Institute, PO Box 800, 9700 AV Groningen, The Netherlands (Postal address for MF)
   2 Kapteyn Institute, Groningen 9700 AV, the Netherlands
   2 Kapteyn Institute, Groningen 9700 AV, The Netherlands
   2 Kapteyn Astronomical Institute, Postbus 800, 9700 AV Groningen, The Netherlands
   2 Kansas State University of Agriculture and Applied Science, Manhattan, Kan.
   2 Joint Institute for Laboratory Astrophysics, University of Colorado and National Institute of Standards and Technology, Campus Box 440, Boulder, CO 80309-0440, USA
   2 Joint Institut for VLBI in Europe, Dwingeloo, Holland
   2 Joint Astronomy Centre, 660 N. A`ohoku Place, Hilo, Hawaii 96720, USA
   2 Joint Astronomy Centre, 660 N. A'ohoku Place, University Park, Hilo, HI 96720, USA
   2 Johns Hopkins University, Applied Physics Laboratory, Laurel, MD
   2 Jet Propusion Lab., Cal. Inst. of Tech., Pasadena, CA, US
   2 Jamieson Science and Engineering, Inc., Palo Alto, CA
   2 Jamieson Science & Engineering, Inc., Scotts Valley, CA
   2 Istituto di Fisica Generale dell'Universita, Via Pietro Giuria 1, I-10125 Torino, Italy
   2 Istituto di Fisica Generale dell'Universita, Torino, Italy
   2 Istituto di Astrofisica Spaziale, CNR, Via E. Fermi, 21, 00044 Frascati, Italy
   2 Istituto Tecnologie e Studio Radiazioni Extraterrestri, CNR, Via Gobetti, 101, 40129 Bologna, Italy
   2 Interuniversity Institute for High Energies, Brussels, Belgium
   2 Interuniv. Regional Center for Astrophysics and Cosmology, Italy
   2 International School for Advanced Studies, SISSA, via Beirut 2-4, I-34013 Trieste, Italy
   2 International School for Advanced Studies, SISSA via Beirut 2-4, 34013 Trieste, Italy
   2 International School for Advanced Studies, Miramare-Trieste, Italy
   2 International Earth Rotation Service, Paris, France
   2 Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune 411 007, India
   2 Inter-University Centre for Astronomy and Astrophysics, Poona, India
   2 Inter-University Centre for Astronomy and Astrophysics, Ganeshkhind, India
   2 Inter-University Center for Astronomy and Astrophysics, Post Bag 4, Pune 411007, India
   2 Inter-Univ. Center Astronomy & Astrophysics, Ganeshkhind, India
   2 Instituto di Radioastronomia, CNR, via Gobetti 101, Bologna, Italy
   2 Instituto de Radioastronomia, Milimetrica, Granada, Spain
   2 Instituto de Radioastronomia Millimetrica, Granada, Spain
   2 Instituto de Fisica-UFRGS, Porto Alegre, Brazil
   2 Instituto de Fisica, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre-RS, Brazil
   2 Instituto de Fisica de Cantabria (Consejo Superior de Investigaciones Cientificas - Universidad de Cantabria), Avenida de los Castros, 39005 Santander, Spain
   2 Instituto de Fisica de Cantabria (CSIC-UC), Avda. de los Castros, 39005 Santander, Spain
   2 Instituto de Astronomia, UNAM, Apdo Postal 877, Ensenada, BC 22800, Mexico
   2 Instituto de Astronomia, Apdo. Postal 70-264, Ciudad Universitaria, Mexico DF 04510, Mexico
   2 Instituto de Astrofisica de Canarias, 38200 La Laguna, Tenerife, Spain and Departamento de Astrofisica, Universidad de La Laguna, Tenerife, Spain
   2 Instituto de Astrofisica de Andalucia, CSIC, Ap. Correos 3004, C/ Sancho Panza s/n, E-18080 Granada, Spain
   2 Instituto de Astrofisica de Andalucia, C.S.I.C., Apdo. 3004 E-18080 Granada, Spain
   2 Instituto de Astrofisica de Andalucia (CSIC), Apartado 3004, 18080 Granada, Spain
   2 Instituto Superior Tecnico, 1096 LISBOA Codex, Portugal
   2 Instituto Astronomico e Geofisico, Universidade de Sao Paulo, Avenida Miguel Stefano 4200, CEP 04301-904, Sao Paulo, SP, Brazil
   2 Instituto Astronomico e Geofisico, Universidade de Sao Paulo, Av. Miguel Stefano 4200, Agua Funda, Cep. 04301-904, Sao Paulo, Brazil
   2 Instituto Astronomico e Geofisico, Universidade de Sao Paulo, Av. M. Stefano 4200, Agua Funda (04301-904) Sao Paulo SP, Brazil
   2 Instituto Astronomico e Geofisico da Universidade de Sao Paulo, CP9638, 01065-970, Sao Paulo, Brazil
   2 Institute of Theoretical Physics and Astrophysics, Physics Department, University of Cape Town, Rondebosch 7700, Republic of South Africa
   2 Institute of Strategic Studies, Islamabad, Pakistan
   2 Institute of Astrophysics, Huazhong Normal University, Wuhan 430070, China
   2 Institute of Astronomy, Russian Academy of Sciences, Pyatnitskaya str. 48, 109017 Moscow, Russia
   2 Institute of Astronomy, Faculty of Science, University of Tokyo, Mitaka, Tokyo 181, Japan
   2 Institute of Astronomy of the Russian Academy of Sciences, 48 Pyatnitskaya Str., 109017 Moscow, Russia
   2 Institute for Molecular Science, Okazaki, Aichi, Japan
   2 Institute for Defense Analyses, Alexandria, VA, US
   2 Institute for Cosmic Ray Research, University of Tokyo, Tanashi, Tokyo 188, Japan
   2 Institute for Computer Applications in Science and Engineering, Hampton, Va.
   2 Institute for Computer Applications in Science and Engineering, Hampton
   2 Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ
   2 Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ
   2 Institute for Astronomy, Department of Physics and Astronomy, The University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ, UK
   2 Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
   2 Institut fur Astronomie und Astrophysik, Universitat Kiel, Olshausenstrasse 40, 24098 Kiel, Germany
   2 Institut fur Astronomie der Leopold-Franzens-Universitat Innsbruck, Technikerstrasse 25, A-6020 Innsbruck, Austria
   2 Institut fuer Theoretische Physik und Sternwarte, Kiel, Germany
   2 Institut fuer Theoretische Astrophysik, Heidelberg, West Germany
   2 Institut fuer Theoretische Astrophysik, Heidelberg, Germany
   2 Institut fuer Theorestishce Physik und Sternwarte der Universitat Kiel, Kiel, Germany
   2 Institut fuer Astronomie und Astrophysik Uni. Muenchen, Meunchen, Germany
   2 Institut fuer Astronomie der Univ. Wien, Wien, Austria
   2 Institut de Biologie Physico-Chimique, Paris, France
   2 Institut d'Astrophysique, Universite de Liege, Avenue de Cointe 5, B-4000 Liege, Belgium
   2 Institut d'Astrophysique, Universite de Liege, 5, avenue de Cointe, B4000 Liege, Belgium
   2 Institut d'Astrophysique de l'Universite de Liege, Liege, Belgium
   2 Institut d'Astrophysique de Paris, CNRS, Universite Pierre et Marie Curie, 98bis Bd Arago, F-75014 Paris, France and DAEC, Observatoire de Paris, Universite Paris VII, CNRS (UA 173), F-92195 Meudon Cedex, France
   2 Institut d'Astrophysique de Paris, CNRS, 98 bis, Boulevard Arago, 75014 Paris, France
   2 Institut d'Astrophysique de Paris, CNRS, 98 bis Boulevard Arago, Paris, F-75014, France
   2 Institut d'Astrophysique de Paris, CNRS, 98 bis Boulevard Arago, F-75014, Paris, France
   2 Institut d'Astrophysique Spatiale, Verrieres-le-Buisson, France
   2 Institut d'Astronomie de l'Universite de Lausanne, Switzerland
   2 Institut Geographique National, Saint Mande, France
   2 Institut D'Astrophysique de Paris, 98 bis Boulevard Arago, 75014 Paris, France
   2 Inst. of Theoretical and Experimental Physics, Moscow, Russia
   2 Inst. of Solar-Terrestrial Physics, Irkutsk, Russia
   2 Inst. of Astronomy, Cambridge, England, UK
   2 Inst. fuer Theoretische Physik und Sternwarte und Univ, Kiel, Germany
   2 Inst. fuer Theoretische Physik & Sternwarte der Univ., Kiel, Germany
   2 Inst. fuer Astronomie & Astrophysik der Univ Wuerzburg, Wuerzburg, Germany
   2 Inst. fuer Astronomie & Astrophysik der Univ Muenchen, Muenchen, Germany
   2 Inst. for Molecular Sciences, Okazaki, Japan
   2 Inst. for Molecular Science, Okazaki, Japan
   2 Inst. des Hautes Etudes Scientifiques, Bures-sur-Yvette, France
   2 Inst. Nacional de Astrofisica, Optica y Electronica, Puebla, Mexico
   2 Insitute of Physics and Astronomy, University of Aarhus, DK-8000 Arhus C, Denmark
   2 Ink Development Corp., San Mateo, CA, US
   2 Indiana Univ. South Bend, South Bend, IN, US
   2 Indian Space Research Organization, Vikram Sarabhai Space Centre, Trivandrum, India
   2 Indian Institute of Astrophysics, Koramangala, Bangalore - 560034, India
   2 Indian Association for the Cultivation of Science, Calcutta, India
   2 Imperial College of Science, Technology and Medicine, Blackett Laboratory, Prince Consort Road, London SW7 2BZ, UK
   2 Illinois Wesleyan University, Bloomington
   2 ISO Observatory, Code SAI, ESTEC, Postbus 299, 2200 AG Noordwijk, The Netherlands
   2 IPAC, Caltech, MS 100-22, Pasadena, CA 91125, USA
   2 INSTITUT FUR ASTRONOMIE, UNIVERSITATSPLATZ 5, A-8010 GRAZ, AUSTRIA
   2 IKI, Space Research Institute, Profsoyuznaya, 84/32, Moscow 117296, Russia
   2 IBM Research Division, T. J. Watson Research Center, PO Box 218, Yorktown Heights, NY 10598, USA
   2 IAS/CNR, Via E. Fermi 21, I-00044 Frascati, Italy
   2 Haystack Observatory, Massachusetts Inst. of Tech., Westford, MA, US
   2 Hatfield Polytechnic Observatory, Bayfordbury, Herts., England
   2 Harvard-Smithsonian Center for Astrophysics, MS-10, 60 Garden Street, Cambridge, MA 02138, USA
   2 Harvard-Smithsonian Center for Astrophysics, 60 Garden St, Cambridge, MA 02138, USA
   2 Hamburger Sternwarte, Gojenbergsweg 112, D-21029 Hamburg, Germany
   2 Hachioji Technical High School, Japan
   2 Grupo de Investigaciones en Astronomia Teorica y Experimental (IATE)-Observatorio Astronomico de Cordoba, Laprida 854, 5000 Cordoba, Arentina
   2 Grup de Fisica Estadistica, Dept. de Fisica, Universitat Autonoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
   2 Groupe d'Astrophysique de Grenoble, Grenoble, France
   2 Gosudarstvennyi Komitet po Ispol'zovaniiu Atomnoi Energii, Institut Teoreticheskoi i Eksperimental'noi Fiziki, Moscow, USSR
   2 Gosudarstvennyi Astronomicheskii Inst., Moscow, Russia
   2 General Electric Co., Aerospace Div., Philadelphia
   2 General Atomic Co., San Diego, Calif.
   2 GRAAL, Universite de Montpellier II, F-34095 Montpellier Cedex 05, France
   2 Frankfurt Univ., Frankfurt am Main, Germany
   2 Florida Institute of Technology, Melbourne, FL, US
   2 Florence and George S. Wise Observatory, Tel Aviv, Israel
   2 Federal Inst. of Technology, Zurich, Switzerland
   2 Facultes Univ. Notre-Dame de la Paix, Namur, Belgium
   2 Facultad de Ciencias Astronomicas y Geofisicas, Universidad Nacional de La Plata, Paseo del Bosque S/N (1900), La Plata, Argentina
   2 Facultad de Ciencias Astronomicas y Geofisicas, Universidad Nacional de La Plata, Paseo del Bosque S/N (1900) La Plata, Argentina
   2 Facultad de Ciencias Astronomicas y Geofisicas de la Universidad Nacional de La Plata and Programa de Fotometria y Estructura Galactica del Consejo Nacional de Investigaciones Cientificas y Tecnicas de la Republica Argentina, Paseo del Bosque, 1900 La Plata, Argentina
   2 Facultad de Ciencias Astronomicas y Geofisicas Universidad Nacional de La Plata, Paseo del Bosque S/N, (1900) La Plata, Argentina
   2 European Southern Observatory, Karl-Schwarzschild-strasse 2, D-85748 Garching bei Munchen, Germany
   2 European Southern Observatory, Karl-Schwarzschild-Strasse 2, D85748 Garching bei Munchen, Austria
   2 European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching-bei-Munchen, Germany
   2 European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching bei Munchen, Germany
   2 Eureka Scientific, Oakland, California, US
   2 Erlangen-Nuernberg, Universitaet, Erlangen, Federal Republic of Germany
   2 Erindale College, Missisauga, Canada
   2 Embry-Riddle Aeronautical University, Daytona Beach, Fla.
   2 Electronic Engineering Laboratory, University of Kent at Canterbury, Kent CT2 7NT, UK
   2 Electronic Engineering Laboratories, The University of Kent at Canterbury, Canterbury, Kent CT2 7NT
   2 Edinburgh, Royal Observatory, U. K. Schmidt Telescope Unit, Coonabarabran, New South Wales, Australia
   2 Edinburgh Royal Observatory, U.K. Schmidt Telescope Unit, Coonabarabran, New South Wales, Australia
   2 Eastern Centre for Research in Astrophysics, Institute of Radiophysics & Electronics, 92 A.P.C. Road, Calcutta 700009, India
   2 Eastern Centre for Research in Astrophysics, Institute of Radio Physics & Electronics, 92, A.P.C. Road, Calcutta - 700009, India
   2 East Tennessee State University, Johnson City, TN, US
   2 EURATOM and U.K. Atomic Energy Authority Fusion Association, Culham Laboratory, Abingdon, Oxon, England
   2 EURATOM and Commissariat a l'Energie Atomique, Centre d'Etudes Nucleaires de Fontenay-aux-Roses, Fontenay-aux-Roses, Hauts-de-Seine, France
   2 ESTEC, Space Science Dept., Noordwijk, Netherlands
   2 ESO, Karl-Schwarzschild Strasse 2, D-85748 Garching bei Munchen, Germany
   2 ESA, Space Telescope-European Coordinating Facility, Garching, Germany
   2 ESA, Space Telescope European Coordinating Facility, Garching, Germany
   2 ESA, European Space Operations Centre, Darmstadt, Federal Republic of Germany
   2 ESA IUE Observatory, PO Box 50727, 28080 Madrid, Spain
   2 ESA IUE Observatory, Apartado 50727, 28080-Madrid, Spain and Affiliated to the Astrophysics Division, Space Science Department, Noordwijk, The Netherlands
   2 Dutch Meteor Society, Leiden, Netherlands
   2 Durban-Westville, University, Durban, Republic of South Africa
   2 Dominion Radio Astrophysical Observatory, PO Box 248, Penticton, BC V2A 6K3, Canada
   2 Dominion Radio Astrophysical Observatory, National Research Council, Box 248, Penticton, British Columbia V2A 6K3, Canada
   2 Dominion Radio Astrophysical Observatory, Herzberg Institute of Astrophysics, National Research Council, PO Box 248 Penticton, BC, Canada V2A 6K3
   2 Dominion Astrophysical Observatory, Herzberg Institute of Astrophysics, National Research Council of Canada, 5071 W. Saanich Road, Victoria, British Columbia, Canada V8X 4M6
   2 Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena CA 91125, U.S.A.
   2 Dipartmento di Astronomia e Scienza dello Spazio, Firenze, Italy
   2 Dipartimento di Fisica, Universita di Milano, Via Celoria 16, 20133 Milano, Italy
   2 Dipartimento di Fisica, Universita della Calabria, I-87036 Roges di Rende (CS), Italy
   2 Dipartimento di Fisica, Universita degli Studi `Roma Tre', Via della Vasca Navale 84, I-00146, Italy
   2 Dipartimento di Fisica, Universita degli Studi `Roma Tre', Via della Vasca Navale 84, I-00146 Roma, Italy
   2 Dipartimento di Fisica dell'Universita di Milano, via Celoria 16, I-20133 Milano, Italy
   2 Dipartimento di Fisica dell'Univ., Milano, Italy
   2 Dipartimento di Astronomia, Universita degli Studi di Bologna, via Zamboni 33, I-40126, Bologna, Italy
   2 Dipartimento di Astronomia e Scienza dello Spazio, Universita degli Studi di Firenze, Largo Enrico Fermi 5, Florence, I-50125, Italy
   2 Dipartimento di Astronomia e Scienza dell Spazio, Universita di Firenze, Largo E. Fermi 5, I--50125 Firenze, Italy
   2 Deutsche Forschungs- und Versuchsanstalt fuer Luft- und Raumfahrt, Wessling, West Germany
   2 Dept. of Astronomy, Univ. of Trieste -- via G. B. Tiepolo 11, I-34131 Trieste, Italy
   2 Department of Theoretical Physics, School of Physics, University of Sydney, NSW 2006, Australia
   2 Department of Theoretical Physics, Oxford University, Oxford, UK
   2 Department of Theoretical Astrophysics, California Institute of Technology, Pasadena, CA 91125, USA
   2 Department of Theoretical Astrophysics, A. F. Ioffe Physico-Technical Institute, St Petersburg 194021, Russia
   2 Department of Pure and Applied Physics, Queen's University of Belfast, Belfast BT7 1NN, UK
   2 Department of Pure & Applied Physics, Queen's University of Belfast, Belfast BT7 1NN, Ireland
   2 Department of Physics, Yamagata University, Yamagata 990, Japan
   2 Department of Physics, University of Tasmania, Hobart, Tasmania, Australia 7001
   2 Department of Physics, University of Tasmania, GPO Box 252C, Hobart, Tasmania, Australia 7001
   2 Department of Physics, University of Queensland, St Lucia 4072, Australia
   2 Department of Physics, University of Patras, Patras 26500, Greece
   2 Department of Physics, University of Oxford, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH, UK
   2 Department of Physics, University of Leeds, Leeds LS2 9JT, UK
   2 Department of Physics, University of Leeds, Leeds LS2 9JT
   2 Department of Physics, University of Crete, GR-71003 Heraklion, Greece
   2 Department of Physics, University of Calgary, 2500 University Dr. N. W., Calgary, Alberta T2N 1N4, Canada
   2 Department of Physics, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK
   2 Department of Physics, University of Bristol, Tyndall Avenue, Bristol BS8 1TL
   2 Department of Physics, Tokyo Metropolitan University Minamiohsawa 1-1, Hachioji, Tokyo 192-03, Japan
   2 Department of Physics, The University of Queensland, Brisbane, Queensland 4072, Australia
   2 Department of Physics, The Open University, Walton Hall, Milton Keynes MK7 6AA
   2 Department of Physics, The Open University, Milton Keynes
   2 Department of Physics, The Citadel, 171 Moultrie Street, Charleston, SC 29409, U.S.A.
   2 Department of Physics, Queen's University, Kingston, ON K7L 3N6, Canada
   2 Department of Physics, Queen's University, Kingston, Canada
   2 Department of Physics, Peking University, Beijing 100871, China
   2 Department of Physics, Ochanomizu University, Bunkyo, Tokyo 112, Japan
   2 Department of Physics, MIT, Cambridge, MA 02139, USA
   2 Department of Physics, Keble Road, Oxford OX1 3RH
   2 Department of Physics, Israel Institute of Technology, Haifa 32000, Israel
   2 Department of Physics, Imperial College, London SW7 2BZ, UK
   2 Department of Physics, Hirosaki University, Hirosaki 036, Japan
   2 Department of Physics, Brandeis University, Waltham, Massachusetts 02254, USA
   2 Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, Troy, New York, 12180-3590, USA
   2 Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA
   2 Department of Physics, Applied Physics & Astronomy, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
   2 Department of Physics and Mathematical Physics, The University of Adelaide, Adelaide, 5005 Australia
   2 Department of Physics and Center for Space Research, 37-551 Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
   2 Department of Physics and Astronomy, University of Wales, Cardiff, PO Box 913, Cardiff CF2 3YB, UK
   2 Department of Physics and Astronomy, University of Wales, Cardiff, PO Box 913, Cardiff CF2 3YB
   2 Department of Physics and Astronomy, University of Oklahoma, 440 West Brooks, Rm 131 NH, Norman, OK 73019-0225, USA
   2 Department of Physics and Astronomy, University of Oklahoma, 440 W. Brooks, Rm 131, Norman, OK 73019-0225, USA
   2 Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA
   2 Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
   2 Department of Physics and Astronomy, Arizona State University, Tempe, AZ 85287, USA
   2 Department of Physics and Astronomy, Arizona State University, Box 871504, Tempe, AZ 85287-1504, USA
   2 Department of Physics and Astronomy and C. E. K. Mees Observatory, University of Rochester, Rochester, NY 14627, USA
   2 Department of Physics an Astronomy, Northwestern University, Evanston, IL 60208, USA
   2 Department of Physics & Astronomy, University of Rochester, Rochester, NY, 14627, USA
   2 Department of Maths & Astronomy, Lucknow University, Lucknow 226-007, India
   2 Department of Mathematics and Statistics, University of Northumbria at Newcastle, Ellison Building, Newcastle upon Tyne NE1 8ST
   2 Department of Mathematical Sciences, Goldsmiths' College, University of London, New Cross, London SE14 6NW
   2 Department of Earth and Space Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560, Japan
   2 Department of Earth Sciences, Pusan National University, Pusan 609-735, Korea
   2 Department of Earth Science and Astronomy, College of Arts and Science, University of Tokyo, Komaba, Meguro, Tokyo 153, Japan
   2 Department of Condensed-Matter Physics, Weizmann Institute of Science 76100 Rehovot, Israel
   2 Department of Chemistry, Tennessee Technological University, Cookeville, TN 38505, USA
   2 Department of Chemistry, Monash University, Clayton, Victoria 3168, Australia
   2 Department of Astrophysics, University of Oxford, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH, UK
   2 Department of Astrophysics, School of Physics, University of Sydney, NSW 2006, Australia
   2 Department of Astrophysics, Nuclear Physics Building, Keble Road, Oxford OX1 3RH, UK
   2 Department of Astrophysics, Nuclear Physics Building, Keble Road, Oxford OX1 3RH
   2 Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544-1001, USA
   2 Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA
   2 Department of Astronomy, University of Washington, Seattle, WA 98195, USA
   2 Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195-1580, USA
   2 Department of Astronomy, University of Virginia, PO Box 3818, Charlottesville, VA 22903-0818, USA
   2 Department of Astronomy, University of Toronto, Toronto, M5S 1A7 Canada
   2 Department of Astronomy, University of Toronto, 60 St George Street, Toronto, Ontario M5S 1A7, Canada
   2 Department of Astronomy, University of Toronto, 60 St George Street, Toronto, Canada M5S 1A7
   2 Department of Astronomy, University of Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy
   2 Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA
   2 Department of Astronomy, University of Manchester, Schuster Laboratory, Oxford Road, Manchester M13 9PL,
   2 Department of Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK
   2 Department of Astronomy, University of Florida, PO Box 112055, Gainesville, FL 32611-2055, USA
   2 Department of Astronomy, Nanjing University, Nanjing, 210093, PR China
   2 Department of Astronomy, MS 105-24, California Institute of Technology, Pasadena, CA 91125, USA
   2 Department of Astronomy, Istanbul University, 34452 University, Beyazit, Istanbul, Turkey
   2 Department of Astronomy, Faculty of Physics, St Kliment Okhridski University of Sofia, 5 James Bourchier St, BG-1126 Sofia, Bulgaria
   2 Department of Astronomy, Faculty of Physics, St Kl. Okhridski University of Sofia, 5 James Bourchier St, BG-1126 Sofia, Bulgaria
   2 Department of Astronomy, Dartmouth College, Hanover, New Hampshire 03755, USA
   2 Department of Astronomy, Columbia University, New York, NY 10027, USA
   2 Department of Astronomy and Atmospheric Sciences, Kyungpook National University, Taegu, Korea
   2 Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802, USA
   2 Department of Astronomy and Astrophysics, Goteborg University and Chalmers University of Technology, 412 96 Goteborg, Sweden
   2 Department of Astronomy & Astrophysics, Goteborg University and Chalmers University of Technology, 412 96 Goteborg, Sweden
   2 Department of Applied Mathematics, The University of Leeds, Leeds LS2 9JT, UK
   2 Department of Applied Mathematics, The University of Leeds, Leeds LS2 9JT
   2 Department of Applied Mathematics and Theoretical Physics, The Queen's University of Belfast, Belfast BT7 1NN, UK
   2 Department of Applied Mathematics and Physics, Kyoto University, Kyoto 606, Japan
   2 Department of Applied Mathematics & Theoretical Physics, University of Cambridge, Cambridge CB3 9EW, UK
   2 Department d'Astronomia i Astrofisica, Universitat de Valencia, 46100 Burjassot, Valencia, Spain
   2 Departamento de Fisica Teorica y del Cosmos, Universidad de Granada, Granada, Spain
   2 Departamento de Fisica Teorica y del Cosmos, Facultad de Ciencias, 18071-Granada, Spain
   2 Departamento de Fisica Moderna, Universidad de Cantabria, Avda. de los Castros, 39005 Santander, Spain
   2 Departamento de Fisica Moderna, Universidad de Cantabria, 39005, Santander, Spain
   2 Departamento de Astronomia , Universidad de Chile, Casilla 36-D, Santiago, Chile
   2 Departamento de Astrofisica, Facultad de Ciencias Fisicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
   2 Departamento Fisica Moderna, Universidad de la Cantabria and Instituto Mixto de Fisica de Cantabria, CSIC-U. de Cantabria, Santander (Cantabria), Spain
   2 Delft, Technische Hogeschool, Netherlands
   2 Dearborn Observatory, Northwestern University, 2131 Sheridan Road, Evanston, IL 60208-2900
   2 DRAO, PO Box 248, Penticton, BC, V2A 6K3, Canada
   2 DICE Universidade de Lisboa, Av. Prof. Gama Pinto, 2, 1699 Lisboa Codex, Portugal
   2 DEMIRM, Observatoire de Paris Meudon, 77, Avenue Denfert Rochereau, 75014 Paris, France
   2 DAEC, CNRS, Observatoire de Paris-Meudon, 5 place J. Janssen, 92195 Meudon, France, e-mail: maurogordato@obspm.fr
   2 Czechoslovak Academy of Sciences, Astronomical Inst., Ondrejov, Czechoslovakia
   2 Ctr. for Research in Earth & Space Science, York Univ., North York, Canada
   2 Crete, Orthodox Academy, Kolimbari, Greece
   2 Courant Inst. of Mathematical Sciences, New York Univ., New York, NY, US
   2 Council for Scientific and Industrial Research, National Institute of Telecommunications Research, Johannesburg, Republic of South Africa
   2 Council for Scientific Research, Astronomy and Space Research Center, Baghdad, Iraq
   2 Copenhagen University Observatory, Lster Voldgade 3, DK-1350 Copenhagen, Denmark
   2 Copenhagen University Observatory, Copenhagen K, Denmark
   2 Copenhagen Univ. Observatory, Copenhagen, Denmark
   2 Conselho Nacional de Desenvolvimento Cientifico e Technologico, Sao Paulo, Brazil
   2 Consejo Nacional de Investigaciones Cientificas y Tecnicas, Buenos Aires, Argentina
   2 Consejo Nacional de Investigaciones Cientifica y Tecnicas (CONICET) Observatorio Astronomico de la Universidad Nacional de Cordoba, Laprida 853, 5000 Cordoba, Argentina
   2 Computer Technology Associates, Inc., Lanham, MD
   2 Computer Sciences Corp., System Sciences Div., Silver Spring, MD
   2 Computational Physics, Inc., Fairfax, VA, US
   2 Computational Physics, Inc., Fairfax, VA
   2 Compton Observatory Science Support Center, Greenbelt, MD
   2 Complejo Astronomico el Leoncito, San Juan, Argentina
   2 Commonwealth Scientific and Industrial Research Organization, Radiophysics Div., Epping, New South Wales, Australia
   2 Comitato Nazionale per la Ricerca e per lo Sviluppo dell'Energia Nucleare e delle Energie Alternative, Laboratorio Dati Nucleari, Bologna, Italy
   2 Comision Nacional de Investigacion del Espacio, Grupos Cientificos, Torrejon de Ardoz, Spain
   2 Colorado College, Colorado Springs, Colo.
   2 Colorado College, Colorado Springs, CO
   2 Climenhaga Observatory, Department of Physics and Astronomy, University of Victoria, Victoria, B.C. V8W 3P6, Canada
   2 Clausthal, Technische Universitaet, Clausthal-Zellerfeld, West Germany
   2 City Polytechnic of Hong Kong, Hong Kong
   2 Chinese Academy of Sciences, Nanjing Astronomical Instrument Factory, Nanjing, People's Republic of China
   2 Chinese Academy of Sciences, Institute of Theoretical Physics, People's Republic of China
   2 China Centre of Advanced Science and Technology, Beijing, People's Republic of China
   2 China Center for Advanced Science and Technology, People's Republic of China
   2 Chiba Prefecture Education Center, Chiba, Japan
   2 Chalmers Univ. of Technology, Goteborg, Sweden
   2 Centro Regional de Investigaciones Cientificas y Tecnologicas, Mendoza, Argentina
   2 Centro Interuniversitario Regionale per l'Astrofisica e la Cosmologia, Italy
   2 Centre de Donnees de Strasbourg, Strasbourg, France
   2 Centre d'Estudis Avancats de Blanes, Blanes, Spain
   2 Centre d'Estudis Avancats de Blanes (CSIC), Cami de Santa Barbara, 17300 Blanes, Spain
   2 Centre d'Estudis Avancats Blanes, Blanes, Spain
   2 Centre d'Analyse des Images and Observatoire de Paris, DEMIRM/URA~337 du CNRS, 77 Avenue Denfert Rochereau 75014 Paris, France
   2 Centre National de Coordination et de Planification de la Recherche Scientifique et Technique, Rabat, Morocco
   2 Centre National d'Etudes Spatiales, Groupe de Recherches de Geodesie Spatiale, Toulouse, France
   2 Central Michigan University, Mount Pleasant, Mich.
   2 Center for EUV Astrophysics, 2150 Kittredge Street, University of California, Berkeley, CA 94720, USA
   2 Center for Astrophysics, 60 Garden Street, Cambridge MA 02138, USA
   2 Center for Astrophysics, 60 Garden St, Cambridge, MA 21260, USA
   2 Center for Astrophysics and Space Sciences, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0111, USA
   2 Center for Advanced Research in Space Optics, Trieste, Italy
   2 Carter National Observatory, Wellington, New Zealand
   2 Carter National Observatory of New Zealand, Wellington
   2 Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101-1292, USA
   2 Canterbury University, Christchurch, New Zealand
   2 Canterbury Univ., Christchurch, New Zealand
   2 Canarias, Instituto de Astrofisica, La Laguna, Spain
   2 Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St George Street, Toronto, ON, M5S 1A7, Canada
   2 Canadian Institute for Theoretical Astrophysics, McLennan Labs, University of Toronto, 60 St George Street, Toronto M5S 1A7, Canada
   2 Canadian Institute for Theoretical Astrophysics, McLennan Labs, 60 St George Street, Toronto M5S 3H8, Ontario, Canada
   2 Canadian Institute for Theoretical Astrophysics, McLennan Labs, 60 St George Street, Toronto M5S 1A7, Ontario, Canada
   2 Cambridge University, Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK
   2 California, University, Lawrence Livermore Laboratory, Livermore, CA
   2 California, Saint Mary's College, Moraga
   2 California State College, San Bernardino, CA
   2 California Polytechnic State University, San Luis Obispo, CA
   2 California Institute of Technology, Jet Propulsion Laboratory, Pasadena, Calif., Williams College, Williamstown, Mass.
   2 California Inst. of Tech. and Jet Propulsion Lab., Pasadena, CA, US
   2 CSIRO, Div. of Materials Science and Technology, Clayton, Australia
   2 CNRS, Laboratoire de Physique Moleculaire et d'Optique Atmospherique, Orsay, Essonne, France
   2 CNRS, Institut d'Astrophysique Spatiale, Verrieres-le-Buisson
   2 CNRS, Centre de Recherches en Physique de l'Environnement Terrestre et Planetaire, Orleans, France
   2 CNR, Laboratorio di Cosmo-geofisica, Turin, Italy
   2 CNR, Istituto per le Applicazioni Interdisciplinari della Fisica, Italy
   2 CNR, Istituto per la Ricerca sulle Onde Elettromagnetiche, Florence, Italy
   2 CNR, Istituto di Studio e Tecnologie sulle Radiazioni Extraterrestri, Italy
   2 CNR, Istituto di Fisica dello Spazio Interplanetario, Rome, Italy
   2 CNR, Ist. di Cosmogeofisica, Turin, Italy
   2 CNR, Instituto di Fisica dell'Atmosfera, Rome, Italy
   2 CNR, Centro per l'Astronomia IR, Florence, Italy
   2 CNR, Centro Astronomia Infrarossa, Florence, Italy
   2 CNR - Istituto di Fisica Cosmica ed Applicazioni dell'Informatica, Via Ugo La Malfa 153, 90146 Palermo, Italy
   2 CEA, Laboratoire National Saturne, Gif-sur-Yvette, France
   2 Bulgarian Academy of Sciences, Dept. of Astronomy and National Astronomical Observatory, Sofia, Bulgaria
   2 Brown University, Department of Physics, Providence, RI 02912, USA
   2 British Astronomical Association, London, United Kingdom
   2 Brigham Young University, Provo, Utah, US
   2 Braunschweig, Technische Universitaet, Brunswick, Federal Republic of Germany
   2 Bowling Green State Univ., Bowling Green, OH, US
   2 Board of Studies in Astronomy and Astrophysics, Santa Cruz, CA
   2 Blackett Laboratory, Imperial College of Science, Technology & Medicine, Prince Consort Road, London SW7 2BZ
   2 Besancon Observatory, BP 1615, 25010 Besancon, France<fnr rid="fn1">
   2 Berkeley Astronomy Department, University of California, Berkeley, CA 94720, USA
   2 Bendix Field Engineering Corp., Columbia, MD
   2 Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing 10080, People's Republic of China
   2 Ball Corp., Ball Aerospace Systems Div., Gardena, Calif.
   2 BUREAU DES LONGITUDES, PARIS, FRANCE
   2 B'lgarska Akademiia na Naukite, Samostoiatelna Sektsiia Astronomiia, Sofia, Bulgaria
   2 Australian Telescope National Facility, PO Box 76, Epping, New South Wales 2121, Australia
   2 Atomic Energy Organization, Teheran, Iran
   2 Athens, Academy, Research Center for Astronomy and Applied Mathematics, Athens, Greece
   2 Astrophysikalisches Institut Potsdamm, Potsdam, Germany
   2 Astrophysikalisches Institut Potsdam, An der Sternwarte 16, Potsdam, Germany
   2 Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D- 14482 Potsdam, Germany
   2 Astrophysikalisches Institut Postdam, Postdam, Germany
   2 Astrophysics, Physics Department, The University, Southampton SO9 5NH
   2 Astrophysics, Oxford University, Keble Road, Oxford OX1 3RH
   2 Astrophysics, Nuclear and Astrophysics Laboratory, Physics Department, Oxford University, Keble Road, Oxford OX1 3RH
   2 Astrophysics, Nuclear Physics Laboratory, Oxford, UK
   2 Astrophysics, Keble Road, Oxford OX1 3RH
   2 Astrophysics Group, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF
   2 Astrophysics Group, Blackett Laboratory, Imperial College of Science, Technology and Medicine, Prince Consort Road, London SW7 2BZ, UK
   2 Astrophysics Division, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX
   2 Astrophysics Department, University of Sydney, NSW 2006, Australia
   2 Astronomy and Astrophysics Center, The University of Chicago, Chicago, IL 60637, USA
   2 Astronomy Unit, School of Mathematical Sciences,Queen Mary and Westfield College, Mile End Road, London E1 4NS
   2 Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, University of London, Mile End Road, London, UK
   2 Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, University of London, Mile End Road, London E1 4NS, UK
   2 Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, University of London, Mile End Road, London E1 4NS
   2 Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, University of London
   2 Astronomy Unit, Queen Mary and Westfield College, University of London, Mile End Road, London E1 4NS
   2 Astronomy Unit, Queen Mary and Westfield College, London E1 4NS
   2 Astronomy Program, Department of Earth and Space Sciences, State University of New York, Stony Brook NY 11794, USA
   2 Astronomy Group, The University of Leicester, Leicester LE1 7RH, UK
   2 Astronomy Group, Leicester University, University Road, Leicester LE1 7RH, UK
   2 Astronomy Group, Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH
   2 Astronomy Division, Physics and Astronomy Department, University of California, Los Angeles, California 90095-1562, USA
   2 Astronomy Department, University of Western Ontario, London, Ont, N6A 3K7 Canada
   2 Astronomy Department, University of Washington, Seattle, WA 98195, USA
   2 Astronomy Department, University of Washington, Box 351580, Seattle, WA 98195-1580, USA
   2 Astronomy Department, University of Sydney, Sydney NSW 2006, Australia
   2 Astronomy Department, University of California, Los Angeles, California 90095, USA
   2 Astronomy Department, University of California, Los Angeles, CA 90095-1562, USA
   2 Astronomy Department, University of California, Los Angeles, CA 90095, USA
   2 Astronomy Department, University of California, Berkeley, CA 94720, USA
   2 Astronomy Department, Indiana University, Swain Hall West, Bloomington, IN 47405, USA
   2 Astronomy Centre, University of Sussex, Brighton BN1 9QH, UK
   2 Astronomy Centre, Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, UK
   2 Astronomy Centre, Pedagogical University, Lubuska 2, PL-65-265 Zielona Gora, Poland
   2 Astronomy Centre, MAPS, University of Sussex, Falmer, Brighton BN1 9QH, UK
   2 Astronomisches Institut der Universitat Tuebingen, Tuebingen, Germany
   2 Astronomisches Institut der Universitat Bassel, Binningen, Switzerland
   2 Astronomisches Institut der Ruhr-Universitat, D-44780 Bochum, Germany
   2 Astronomisches Inst. der Univ., Bamberg, Germany
   2 Astronomicheskaia Observatoriia, Kharkov, Ukrainian SSR
   2 Astronomiches Rechen-Institut, Heidelberg, Germany
   2 Astronomical Research, Ltd., Tauranga, New Zealand
   2 Astronomical Observatory, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark
   2 Astronomical Observatory, Jagiellonian University, Orla 171, 30-244 Cracow, Poland
   2 Astronomical Observatory of Warsaw University, Aleje Ujazdowskie 4, 00-478 Warsaw, Poland
   2 Astronomical Institute, University of Utrecht, Postbus 80000, NL-3508 TA, Utrecht, The Netherlands
   2 Astronomical Institute, Tohoku University, Aoba-ku, Sendai, 980-77, Japan
   2 Astronomical Institute, St Petersburg University, Bibliotechnaya pl. 2, 198904 St Petersburg Peterhof, Russia
   2 Astronomical Institute, Faculty of Science, Tohoku University, Sendai Miyagi 980-77, Japan
   2 Astronomical Institute ``Anton Pannekoek'', University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands and Dpto. Fisica Teorica, C--XI, Facultad de Ciencias, Universidad Autonoma de Madrid, Cantoblanco, E--28049 Madrid, Spain
   2 Astronomical Institute `Anton Pannekoek', University of Amsterdam and Centre for High Energy Astrophysics (CHEAF) Kruislaan 403, 1098 SJ, Amsterdam, The Netherlands
   2 Astronomical Institute `Anton Pannekoek', University of Amsterdam and Center for High Energy Astrophysics, Kruislaan, 403, 1098 Amsterdam, The Netherlands
   2 Astronomical Institute Anton Pannekoek, University of Amsterdam, and Center for High Energy Astrophysics, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
   2 Astronomical Institute 'Anton Pannekoek', University of Amsterdam and Center for High Energy Astrophysics, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
   2 Astronomical Inst. of the Uzbek Academy of Sciences, Tashkent, Uzbekistan
   2 Astronomical Inst. Anton Pannekoek, Amsterdam Univ., Amsterdam, Netherland
   2 Astro Space Center, Lebedev Physical Institute, Profsoyuznaya 84/32, 117810 Moscow, Russia
   2 Astro Space Center of P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Profsoyuznaya st., 84/32, Moscow 117810, Russia
   2 Associazione Friulana di Astronomia e Meteorologia, Udine, Italy
   2 Association of Universities for Research in Astronomy, Washington, DC
   2 Asiago and Ekar Observatories, Italy
   2 Arya Mehr University of Technology, Teheran, Iran
   2 Aristoteleion Univ. of Thessaloniki, Macedonia, Greece
   2 Anglo-Australian Observatory, PO Box 296, Epping, New South Wales 2121, Australia
   2 Anglo-Australian Observatory, Coonabarabran, NSW 2357, Australia
   2 American Science and Engineering, Inc., Arlington, MA
   2 Allegheny County, Community College, Pittsburgh, PA
   2 Akademiia Nauk Ukrainskoi SSR, Institut Radiofiziki i Elektroniki, Kharkov, Ukrainian SSR
   2 Akademie der Wissenschaften der DDR, Zentralinstitut fuer Astrophysik, Potsdam, German Democratic Republic
   2 Aerospace Corp., Space and Environment Technology Center, Los Angeles
   2 Advanced Computer Concepts, Inc., Potomac, MD
   2 AdW der DDR, Zentralinstitut fuer Astrophysik, Potsdam, German Democratic Republic
   2 ATNF, CSIRO, PO Box 76, Epping NSW 2121, Australia
   2 ASTRONOMICAL OBSERVATORY OF TORINO, I-10025 PINO TORINESE, ITALY
   2 ANU Astrophysical Theory Centre, Department of Mathematics, The Australian National University, ACT 0200, Australia
   2 ANU Astrophysical Theory Centre and Department of Mathematics, School of Mathematical Science, The Australian National University, ACT 0200, Australia
   2 AN Uzbekistana, Astronomicheskii Inst., Tashkent, Uzbekistan
   2 AN SSSR, Leningradskii Institut Iadernoi Fiziki, Gatchina, USSR
   2 A.F.Ioffe Institute for Physics and Technology, 194021 St Petersburg, Russia
   2 A.F. Ioffe Institute of Physics and Technology, St. Petersburg, Russia
   2 A.F. Ioffe Institute for Physics and Technology, St. Petersburg, Russia
   2 A. F. Ioffe Institute for Physics and Technology, 194021 St. Petersburg, Russia
   2 6127 Wilder Laboratory, Department of Physics and Astronomy, Dartmouth College, Hanover NH 03755, USA
   2 61 Rosebery Street, Bedford, 6052 Western Australia
   2 1150 University Avenue, Space Astronomy Laboratory, University of Wisconsin, Madison, WI 53706, USA
   1 {CNR - Istituto di Fisica Cosmica e Tecnologie Relative, Via Bassini 15, 20133 Milano, Italy and Dip. Fisica, Universita di Milano, Via Celoria 16, 20133 Milano, Italy
   1 te 142, 4 place Jussieu, 75005 Paris, France
   1 and Visiting astronomer, Cerro Tololo Inter-American observatory, operated under contract No. AST 78-27879
   1 and Universitatssternwarte Munchen, Scheinerstr. 1, D-81679 Munchen, Germany
   1 and URA 173 (associee au CNRS et a l'Universite Paris 7) et DAEC, Observatoire de Paris, F-92195 Meudon, France
   1 and Max--Planck--Institut fur Extraterrestrische Physik (MPE), Giessenbachstrasse, Postfach 1603, D-85740 Garching, Germany), AB-
   1 and Istituto Nazionale di Ottica, Largo E. Fermi 6, I--50125 Firenze, Italy
   1 and Dpto. Fisica Teorica C--XI, Facultad de Ciencias, Universidad Autonoma de Madrid, Cantoblanco, E--28049 Madrid, Spain
   1 acutesica de Canarias, E-38200, La Laguna, Tenerife, Canary Islands, Spain
   1 Zuerich, Eidgenoessische Technische Hochschule, Zurich, Federal Republic of Germany
   1 Zhongshan University, Guangzhou, People's Republic of China
   1 Zentralinstitut fuer Astrophysik, Tremsdorf, Federal Republic of Germany
   1 Zentralinstitut fuer Astrophysik, Potsdam, Federal Republic of Germany
   1 Yunnan Observatory, Academia Sinica, P.O.Box 110, Kunming 650011, China and Center for Astrophysics, CCAST (World Laboratory), Beijing, China
   1 Yunnan Observatory, Academia Sinica, P.O.Box 110, Kunming 650011, China
   1 Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-01, Japan
   1 Yuge National College for Maritime Technology, Ehime, Japan
   1 Yuge National Coll. of Maritime Technology, Ehime, Japan
   1 York University, Department of Physics and Astronomy, 4700 Keele Street, North York, Ontario, M3J 1P3, Canada
   1 York Mills Collegiate Institute, North York, Canada
   1 Yerevan Physics Institute, Alikhanian Brothers 2, 375036 Yerevan, Armenia
   1 Yale University, New Haven, Connecticut, US
   1 Yale Astronomy Department, New Haven, CT 06520-8101, USA
   1 Xinjiang Institute of Technology, Urumqi, People's Republic of China
   1 Wyzsza Szkola Pegagogiczna, Rzeszow, Poland
   1 Wyzsza Szkola Pedagogiczna, Rzeszow
   1 WorldView Imaging Corp., Livermore, CA, US
   1 Wolf Research and Development Corp., Riverdale, Md.
   1 Wise Observatory & School of Physics and Astronomy, Raymond and Beverly Sackler of Exact Sciences, Tel Aviv University, Tel Aviv, 69978, Israel
   1 Wise Observatory & School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 69978, Israel
   1 Wisconsin-Parkside, University, Kenosha, Wis.
   1 Wisconsin-Madison, University, Madison, Wis.
   1 Williams College, Williamstown, Mass.
   1 Westfalische Wilhelms-Universitat, Munster, Germany
   1 Western Washington State University, Bellingham, WA
   1 Western Ontario Univ., London, Ontario, Canada
   1 Westerbork, Radiosterrewacht Zwiggelte, Netherlands
   1 Westerbork, Radiosterrenwacht, Hooghalen, Netherlands
   1 Westerbork, Radiosterrenwacht Zwiggelte, Netherlands
   1 West Virginia University, Morgantown, W. Va.
   1 Warszawa, Uniwersytet, Observatorium Astronomiczne, Warsaw, Poland
   1 Warszawa, Uniwersytet, Astronomiczne Obserwatorium, Warsaw, Poland
   1 Warszawa, Obserwatorium Astronomiczne, Warsaw, Poland
   1 Warsaw University Observatory, Al.Ujazdowskie 4, 00-478 Warsaw, Poland
   1 Warsaw University Observatory, Al. Ujazdowskie ~4, 00-478 ~Warsaw, Poland, e-mail: jka@sirius.astrouw.edu.pl; Guest Observer, Cerro Tololo Inter-American Observatory, NOAO, operated by the Associations of Universities for Research in Astronomy Inc., under contract with the National Science Foundation.
   1 Warsaw University Observatory, Al. Ujazdowskie ~4, 00-478 Warsaw, Poland, e-mail: jka@sirius.astrouw.edu.pl, Visiting Astronomer, Kitt Peak National Observatory. KPNO is operated by AURA, Inc., under contract with the National Science Foundation.
   1 Warsaw University Observatory, Al. Ujazdowskie 4, Pl-00478 Warszawa, Poland
   1 Warsaw University Observatory, Al. Ujazdowskie 4, 00-478, Warsaw, Poland
   1 Wallongong, University, Wallongong, New South Wales, Australia
   1 WIP Astronomie/Universitat Potsdam, Sternwarte Babelsberg, An der Sternwarte 16, D--14482 Potsdam, Germany
   1 Vysoka Skola Banska, Ostrava, Czechoslovakia
   1 Visiting Fellow, Astronomy Centre, Univ. Sussex, Falmer, Brighton, BN1 9QH, UK and Dept. Physics \& Astronomy, Univ. St. Andrews, North Haugh, Fife, KY16 9SS, Scotland
   1 Visiting Astronomer, Kitt Peak National Observatory, National Optical Astronomy Observatories, operated by AURA Inc., under contract with the National Science Foundation.
   1 Visiting Astronomer, Canada-France-Hawaii Telescope operated by the National Research Council of Canada, the Centre National de la Recherche Scientifique de France and the University of Hawaii
   1 Victoria University of Wellington, Wellington, New Zealand
   1 Victoria Univ. of Wellington, Wellington, New Zealand
   1 Veszpremi Vegyipari Egyetem, Veszprem
   1 Verein der Sternfreunde, Fachgruppe Meteore, Veitsbronn, Germany
   1 Vassar College, Observatory, Poughkeepsie, NY
   1 Van der Waals-Zeeman Instituut, Universiteit van Amsterdam, Valckenierstraat 65-67, 1018 XE Amsterdam, The Netherlands
   1 Uzbek Academy of Sciences, Astronomical Institute, Tashkent, Uzbekistan
   1 Uttar Pradesh State Observatory, Manora peak, Naini Tal, 263129, India).
   1 Ust'-Kamenogorskii Pedagogicheskii Institut, Ust-Kamenogorsk, Kazakh SSR
   1 Uppsala Universitet, Astronomiska Observatorium, Uppsala, Sweden
   1 Uppsala Observatory, Box 515, Uppsala, S-751 20, Sweden
   1 Uppsala Astronomical Observatory, Box 515, S-75120 Uppsala, Sweden
   1 Uppsala Astronomical Observatory, Box 515, S-751 20 Uppsala, Sweden and GRAAL, Universite Montpellier II, F-34095 Montpellier Cedex 05, France
   1 University of the West Indies, St. Augustine, Trinidad and Tobago
   1 University of the West Indies, Saint Augustine, Trinidad and Tobago
   1 University of of Cape Town, Rondebosch, South Africa
   1 University of Wisconsin, Space Astronomy Laboratory, Madison, WI 53707, USA
   1 University of Wisconsin Center - Marinette, 750 W. Bay Shore Street, Marinette, WI 54143, USA
   1 University of Western Sydney Nepean, P.O. Box 10, Kingswood, NSW 2747, Australia, p.jones@st.nepean.uws.edu.au, g.white@st.nepean.uws.edu.au
   1 University of Western Sydney Nepean, P.O. Box 10, Kingswood, NSW 2747, Australia and Australia Telescope National Facility, CSIRO, P.O. Box 76, Epping, NSW 2121, Australia, mfilipovic@atnf.csiro.au
   1 University of Thessaloniki, Thessaloniki, Greece
   1 University of Texas, Department of Astronomy, Austin, TX 78712, USA
   1 University of Texas at Austin, Austin, TX, US AC, Easthampton, MA, US
   1 University of South Africa, Department of Mathematics and Astronomy, PO Box 392, 0001 Pretoria, South Africa
   1 University of Potsdam, Am Neuen Palais 10, D-14469 Potsdam, Germany
   1 University of Palermo, Via Archirafi 36, 90123 Palermo, Italy
   1 University of Oxford, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH
   1 University of New South Wales, Kensington, NSW, Australia
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   1 University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DL
   1 University of Ljubljana, Department of Physics, Jadranska 19, 1000 Ljubljana, Slovenia
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   1 University of Electro Communications, Chofu, Japan
   1 University of EGE, Department of Astronomy, Izmir, Turkey
   1 University of Cape Town, Department of Astronomy, Rondebosch 7700, South Africa
   1 University of Cambridge, Institute of Astronomy, Madingley Road, Cambridge CB3 0HA
   1 University of California, Santa Barbara, Santa Barbara, CA, US
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   1 University of California and Eureka Scientific, Berkeley, CA, US
   1 University of California Observatories/Lick Observatory, University of California, Santa Cruz, CA 95064, USA
   1 University of California Observatories/Lick Observatory, Board of Studies in Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
   1 University of Brussels (VUB), Pleinlaan 2, 1050 Brussels, Belgium csterken@vub.ac.be
   1 University of Bristol, School of Chemistry, Cantock's Close, Bristol BS81TS
   1 University of Alberta, Edmonton, Alberta, Canada
   1 University Observatory, Copenhagen and Tollose, Denmark
   1 University Chemistry Laboratory, Lensfield Road, Cambridge, UK
   1 Universities Space Research Association, NASA/GSFC, Laboratory for Astronomy and Solar Physics, Code 685, Greenbelt, MD 20771, USA
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   1 Universite de Paris X--Nanterre, F--92000 Nanterre Cedex, France
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   1 Universite de Montreal, Montreal, Quebeca, Canada
   1 Universite Paris VI, CNRS/URA 769, Cosmologie et Gravitation Relativistes, Tour 22-12, 4eme etage, Bo&icirc
   1 Universite Laval, Sainte-Foy, Quebec, Canada
   1 Universitat Sternwarte-Munchen, Scheiner Strasse 1, D-81679 Munchen, Germany
   1 Universitat Potsdam, c/o Astrophysikalisches Institut Potsdam, An der Sternwarte, 16, D-14882 Potsdam, Germany
   1 Universita di Triesta, Tiepolo, Trieste, Italy
   1 Universita di Padova, Dipartimento di Astronomia, vicolo Osservatorio 5, I-35100 Padova, Italy
   1 Universita di Padova, Dipartimento di Astronomia, Vicolo dell'Osservatorio 5, I-35123 Padova, Italy
   1 Universita di Padova, Dept. di Astronomia, Vicolo dell'Osservatorio 5, I-35123 Padova, Italy
   1 Universita di Napoli 'Federico II', Napoli, Italy
   1 Universita degli studi de L'Aquila, Dipartimento di Fisica, Via Vetoio, I-67100, L'Aquila, Italy
   1 Universita degli Studi di Trieste, Trieste, Italy
   1 Universita degli Studi di Napoli Federico, Napoli, Italy
   1 Universita degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy
   1 Universidade de Sao Paulo, IAG, Depto de Astronomia, CP 9638, Sao Paulo, 01065-970, Brazil
   1 Universidade de Sao Paulo, IAG, Departamento de Astronomia, CP 9638, Sao Paulo 01065- 970, Brazil
   1 Universidade de Sao Paulo, CP 9638, Sao Paulo 01065-970, Brazil
   1 Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
   1 Universidade Federal do Rio Grande do Sul, Port Alegre, Brazil
   1 Universidade Federal do Rio Grande do Sul, Dept. de Astronomia, CP 15051, Porto Alegre 91500-970, Brazil
   1 Universidade Federal do Rio Grande do Sul, Departamento de Astronomia, CP 15051, Porto Alegre, 91500-970, Brazil
   1 Universidade Federal do Rio Grande do Norte, Natal, Brasil
   1 Universidad de los Andes and Centro Internacional de Fisica, Bogota, Colombia
   1 Universidad de Navarra, Departamento de Fisica y Matematica, E-31080 Pamplona, Spain
   1 Universidad de Guanajuato, Guanajuato, Mexico
   1 Universidad Nacional Autonoma de Mexico, Villa Obregon, Mexico Universidad Nacional Autonoma de Mexico, Ensenada, Mexico
   1 Universidad Michoacana de San Nicolas de Hidalgo, Morelia, Mexico
   1 Univ. of Wales, College Cardiff, Cardiff, UK
   1 Univ. of Wales College of Cardiff, United Kingdom
   1 Univ. of Waikato, Private Bag, Hamilton, New Zealand
   1 Univ. of Toronto Southern Observatory, Las Campanas, Chile
   1 Univ. of Texas at Dallas, Richardson, TX, US
   1 Univ. of St. Andrews, St. Andrews, Fife, Scotland, UK
   1 Univ. of Science and Technology of China, P.R. China
   1 Univ. of Science and Technology of China, Beijing
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   1 Univ. of Maryland, University Park, MD, US
   1 Univ. of Manchester, Macclesfield, Cheshire, England
   1 Univ. of Manchester Inst. of Science and Technology
   1 Univ. of Central Lancashire, Preston, Lancashire, UK
   1 Univ. of Central Lancashire, Preston, Lancanshire, UK
   1 Univ. of California at Los Angeles, Los Angeles, CA, US
   1 Univ. of California Lawrence Livermore National Lab., Livermore, CA, US
   1 Univ. of CHE, Potchefstroom, South Africa
   1 Univ. for CHE, Potchefstroom, South Africa
   1 Univ. degli Studi di Trieste, Trieste, Italy
   1 Univ. degli Studi di Napoli Federico II, Napoli, Italy
   1 Univ. degli Stidu di Milano, Milano, Italy
   1 Univ. de les Illes Baleares, Palma de Mallorca, Spain
   1 Univ. de Central de Venezuela, Caracas, Venezuela
   1 Univ. d'Orsay - Paris XI, Orsay, France
   1 Univ. Vicollo dell' Osservatorio 5, Padova, Italy
   1 Univ. Nacional de la Plata, La Plata, Argentina
   1 Univ. Federal do Rio Grande do Sul, Porto Alegre, Brazil
   1 Univ. Federal do Rio Grande do Sul, Porte Alegre, Brazil
   1 Univ. College of Cardiff, Cardiff, Wales, UK
   1 Univ. Autonoma Metropolitana, Azcapotzalco
   1 Univ of Goteborg and Chalmers Univ of Technology, Goteborg, Sweden
   1 United Technologies Corp., East Hartford, Conn.
   1 United Kingdom Schmidt telescope, Epping, Russia
   1 Unita di Ricerca di Catania, Catania, Italy
   1 Union College, Schenectady, NY 12308, USA
   1 Union College and Institute for Space Observations, Schenectady, NY 12308, USA
   1 Union Carbide Corp., Nuclear Div., Oak Ridge, TN
   1 Ukrainian Academy of Sciences, Inst. of Radio Astronomy, Kharkov, Ukraine
   1 USAF, Systems Command, Los Angeles Air Force Station, CA
   1 USAF, Space Div., Los Angeles Air Force Station
   1 USAF, Rome Air Development Center, Bedford, MA
   1 USAF, Institute of Technology, Wright-Patterson AFB, Ohio
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   1 USAF, Aerospace Research Laboratories, Wright-Patterson AFB, Ohio
   1 US Naval Observatory, Flagstaff Station, PO Box 1149, Flagstaff, AZ 86002, USA
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   1 URA 173 (associee au CNRS et a l'Universite Paris 7) et DAEC, Observatoire de Paris, F-92195 Meudon, France
   1 URA 1281 (OMP) and Laboratoire d'Astronomie, Universite de Montpellier II, F34000 Montpellier, France
   1 UPR 176 du CNRS, DARC, Observatoire de Paris, Section de Meudon, F-92195 Meudon Cedex, France
   1 UNIVERSITY COLLEGE LONDON, MULLARD SPACE SCIENCE LAB., HOLMBURY ST. MARY, DORKING, SURREY RH5 6NT, UK
   1 UNIV. OF VIENNA, INST. OF ASTRONOMY, TURKENSCHANZSTRASSE 17, A-1180 VIENNA, AUSTRIA
   1 UNI Danish Computing Center for Research and Education, Building 304, Technical University of Denmark, DK-2800 Lyngby, Denmark
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   1 UE Observatory, P.O. Box 50727, 28080 Madrid, Spain
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   1 U.K. Schmidt Telescope Unit, Coonabarabran New South Wales, Australia
   1 U.K. Infrared Telescope Unit, Hilo, HI
   1 U.K. Atomic Energy Authority, Culham Laboratory, Abingdon, Oxon, England
   1 Turku University Observatory, Tuorla, 21500 Piikkio, Finland
   1 Tuorla Observatory, University of Turku, Vaisalantie 20, FIN--21500 Piikkio, Finland
   1 Tuorla Observatory, Turku Univ., Piikkio, Finland
   1 Tuorla Observatory, Tuorla, Piikkio, Finland
   1 Tuorla Observatory, Piikkio, FIN-21500, Finland
   1 Tromso Pedagogiske Hogskole, Tromso, Norway
   1 Trenton State College, NJ. Flower and Cook Observatory, Philadelphia, PA
   1 Toruri Radio Astronomy Observatory, Nicolaus Copernicus University, ul. Gagarina 11, PL-87100 Toruri, Poland
   1 Toronto, University, Toronto and Mississauga, Ontario, Canada
   1 Toronto Airways, Ltd., Markham, Ontario, Canada
   1 Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji 192-03, Japan
   1 Tokyo Institute of Polytechnics, Atsugi, Kanagawa, Japan
   1 Titan Systems, Inc., California, University, La Jolla, CA
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   1 Thomas More College, Fort Mitchell, Ky.
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   1 Theoretische Physik, Ludwig Maximilians Universitat, Theresienstrasse 37, D-80333 Munchen, Germany
   1 Theoretical and Computational Physics Group, Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6373, USA
   1 Theoretical Physics, Keble Road, Oxford OX1 3NP
   1 Theoretical Physics, Department of Physics, Oxford, UK
   1 Theoretical Physics, 1 Keble Road, Oxford OX1 3NP, UK
   1 Theoretical Astrophysics, Caltech, Pasadena, CA 91125, USA
   1 Theoretical Astrophysics, Caltech, Pasadena CA 91125, USA
   1 Theoretical Astrophysics, 130-33 Caltech, Pasadena CA 91125, USA
   1 Theoretical Astrophysics Center, Juliane Maries Vej 30, DK-2100 Copenhagen \O, Denmark
   1 Theoretical Astrophysics Center, Blegdamsvej 17, DK-2100 Kobenhavn o, Denmark
   1 Theoretical Astrophysics 130-33, California Institute of Technology, Pasadena, CA 91125, USA
   1 The Wise Observatory and the School of Physics and Astronomy, Beverly and Raymond Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
   1 The University of Tokyo, Nagano, Japan
   1 The Univ. of Texas at Austin, Austin, TX, US
   1 The Schuster Laboratory, The University, Manchester M13 9PL, UK
   1 The Queen's Univ. of Belfast, Belfast, North Ireland, UK
   1 The Prinicpal Observatory of Ukraine, Kiev, Ukraine
   1 The Physical Chemistry Lab., Oxford, UK
   1 The Observatory, Armagh, Northern Ireland
   1 The Observatories of the Carngegie Institution of Washington, Casilla 601, La Serena, Chile
   1 The Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 91101-1292, USA
   1 The Observatories of the Carnegie Institution of Washington, 813 Santa Barbara St, Pasadena, CA 91101-1292, USA
   1 The King's College, Edmonton, Alberta, Canada
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   1 The Institute of Physical and Chemical Research (RIKEN), Hirosawa, 2-1, Wako-shi, Saitama 351-01, Japan
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   1 The Institute for Astrophysics, Department of Physics and Astronomy, University of New Mexico, 800 Yale Boulevard, NE Albuquerque, NM 87131, USA
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   1 The Copenhagen University Observatory, Copenhagen, Denmark
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   1 Texas, University and McDonald Observatory, Austin, TX
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   1 Teoretisk Astrofysik Center, Danmarks Grundforskningsfond, Aarhus University, DK-8000 Aarhus C, Denmark
   1 Telescopio Nazionale Galileo Project Office, riv. Tiso da Camposampiero 28, I-35122 Padova, Italy
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   1 Tel Aviv University, Wise Observatory, Tel Aviv, Israel
   1 Teknillinen Korkeakoulu, Helsinki, Finland
   1 Teesside Polytechnic, Middlesbrough, Yorks., England
   1 Technical University of Delft, Delft, Netherlands
   1 Tautenburg, Karl-Schwarzschild-Observatorium, Federal Republic of Germany
   1 Tata Institute of Fundamental Research, Radio Astronomy Centre, Ootacamund, India
   1 Tata Institute of Fundamental Research, Homi Bhabha Road, Navy Nagar, Colaba, Bombay 400005, India
   1 Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India
   1 Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay 400 005, India
   1 Tartu, Astrofizicheskaia Observatoriia, Toravere, Estonian SSR
   1 Tartu University, Physics Department, Ulikooli 18, EE2400, Estonia
   1 Tartu Observatory, Toravere, EE-2444 Tartumaa, Estonia
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   1 Tartu Astrophysical Observatory, Toravere, EE-2444, Estonia
   1 Tartu Astrophysical Observatory, EE-2444 Toravere, Estonia
   1 Tajik Academy of Sciences, Inst. of Astrophysics, Dushanbe, Tajikistan
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   1 T. K. Government Arts College, Vridhachalam, India
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   1 Swinburne Institute of Technology, Hawthorn, Victoria, Australia
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   1 Russian State Pedagogical Univ., St. Petersburg, Russia
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   1 Rozhen National Astronomical Observatory, Smoljan, Bulgaria
   1 Royal Observatory, UK Schmidt Telescope Unit, Coonabarabran, Australia
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   1 Royal Military College of Canada, Kingston, Ontario K7K 5LO, Canada
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   1 Royal Dutch Academy of Sciences, Huygens Laboratory, Leiden, Netherlands
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   1 Romanian Academy, Astronomical Inst., Bucharest, Romania
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   1 Radioastronomisches Institut, Universitat Bonn, Auf dem Hugel 71, D 53121 Bonn 1, Germany
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   1 Osservatorio Astronomico di Roma, Via dell'Osservatorio, I-00044 Monteporzio Catone, Italy
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   1 Osservatorio Astronomico di Padova, sede di Asiago, 36012 Asiago (VI), Italy
   1 Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy
   1 Osservatorio Astronomico di Padova, Sede di Asiago, I-36012 Asiago VI, Italy
   1 Osservatorio Astronomico di Padova, Sede di Asiago, I-36012 Asiago (VI), Italy
   1 Osservatorio Astronomico di Monte Porzio, I-00040 Monte Porzio (Roma), Italy
   1 Osservatorio Astronomico di Capodimonte, via Moiariello 16, Napoli, Italy
   1 Osservatorio Astronomico di Capodimonte, Via Moiariello, 16, I--80131 Napoli, Italy).
   1 Osservatorio Astronomico di Capodimonte, Via Moiariello, 16, I--80131 Napoli, Italy
   1 Osservatorio Astronomico di Capodimonte, Via Moiariello 16, I-80131 Napoli, Italy
   1 Osservatorio Astronomico di Brera-Merate, Via Bianchi 46, I-22055 Merate (Lecco), Italy
   1 Osservatorio Astronomico di Bologna, via Zamboni 33, I-40126 Bologna, Italy, e-mail: cappi@astbo3.bo.astro.it
   1 Osservatorio Astronomico di Bologna, Via Zamboni 33, I-40126 Bologna, Italy and Dipartimento d'Astronomia, Universita di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy
   1 Osservatorio Astronomico Torino, Strada Osservatorio 20, I-10025 Pino Torinese, Italy
   1 Osservatorio Astronomico Collurania,University of Pisa, Pisa, Italy
   1 Osservatorio Astrofisico, Universita di Catania, Viale A. Doria 6, I-95125 Catania, Italy
   1 Osservatorio Astrofisico di Catania, V.le A.Doria 6, I-95125 Catania, Italy, gcutispoto@astrct.ct.astro.it
   1 Osservatorio Astrofisico di Arcetri, Largo E.Fermi 5, 50125 Firenze, Italy
   1 Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Florence, Italy
   1 Osservatorio Astrofisico di Arcetri, Largo E Fermi 5, 50125 Firenze, Italy
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   1 Osaka Electric-Science Museum, Osaka, Japan
   1 Osaka Electric-Science Museum, Japan
   1 Organisation Europeene pour la Recherche Nucleaire, Geneva, Switzerland
   1 Orange County Community College, Middletown, NY
   1 Optoelectronics Technology Research Laboratory, Tsukuba, Japan
   1 Optikzentrum NRW, Universitatsstrasse 142, D-44799 Bochum, Germany
   1 Open University, Milton Keynes, Bucks., England
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   1 Oesterreichische Akademie der Wissenschaften, Institut fuer Weltraumforschung, Graz, Austria
   1 Obszerwatorium Astronomiczne, Krakow, Poland
   1 Obsevatorio P. Buenaventura Suarez, Asuncion, Paraguay
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   1 Obserwatorium Astronomiczne, Uniwersytet Jagiellonski, ul. Orla 171, 30-244 Krakow, Poland
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   1 Observwatorium Astronomiczne, Wroclaw, Poland
   1 Observatory, PO Box 14, Tahitorninmaki, FIN-00014 University of Helsinki, Finland
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   1 Observatorium fuer Solare Radioastronomie, Tremsdorf, Germany
   1 Observatorium Bosscha, Jawa Barat, Indonesia
   1 Observatorium Astronomiczny, Warsaw, Poland
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   1 Observatorium Astronomiczne, Polska Akademia Nauk, Centrum Astronomiczne, Warsaw, Poland
   1 Observatorio, PL14, Tahtitorninmaki, FIN-00014, Helsingin Yliopisto, Finland
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   1 Observatorio del Roque de Los Muchachos, Santa Cruz de La Palma, Spain
   1 Observatorio de Fisica Cosmica, San Miguel, Argentina
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   1 Observatorio Roque de Los Muchachos, Santa Cruz de la Palma, Spain
   1 Observatorio Astronomico, Laprida 854, 5000, Cordoba, Argentina
   1 Observatorio Astronomico de Madrid (O.A.N.-I.G.N.) Spain
   1 Observatorio Astronomico de Cerro Calan, Departamento de Astronomia, Universidad de Chile, Casilla 36-D, Santiago, Chile
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   1 Observatorie du Pic du Midi, Bagneres de Bigorre, France
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   1 Observatoire du Calern, Saint-Vallier de Thiey, Alpes-Maritimes, France
   1 Observatoire de la Recherche Planetaire, Hino, Tokyo, Japan
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   1 Observatoire de la Cote d'Azur, URA 1361 de CNRS, Caussols, St Vallier de Thiey, F-06460, France
   1 Observatoire de la Cote d'Azur, Dept. CERGA, URA CNRS 1360, Av. N. Copernic, F-06130 Grasse, France
   1 Observatoire de la Cote d'Azur, Departement Fresnel, CNRS URA 1361, 06460 Saint Vallier de Thiey, France
   1 Observatoire de la Cote d'Azur, Departement A. Fresnel, Boite Postale 229, Nice 06304, Cedex 4, France
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   1 Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
   1 Observatoire de Paris/Central Bureau of IERS-CNRS/URA, Paris, France
   1 Observatoire de Paris-Meudon, F-92195 Meudon, Principal Cedex, France
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   1 Observatoire de Paris, Departement de Recherche Spatiale, URA CNRS 264, F--92195 Meudon Principal Cedex, France
   1 Observatoire de Paris, DESPA, 5 place Jules Janssen, F-92195 Meudon, France
   1 Observatoire de Paris, DESPA, 5 place J. Janssen, 92195 Meudon Cedex, France
   1 Observatoire de Paris, DAEC, URA 173 CNRS, F-92195, Meudon, France
   1 Observatoire de Nice, B4229, Le Mont-Gros, 06304 Nice Cedex 4, France, e-mail: slezak@obs-nice.fr
   1 Observatoire de Marseille, 2 Place Le Verrier, F-13248 Marseille Cedex 04, France
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   1 Observatoire Midi Pyrenees, UMR 5572, CNRS, F65200 Bagneres de Bigorre, France
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   1 OSSERVATORIO ASTRONOMICO, VIA TIEPOLO 11, I-34131 TRIESTE, ITALY
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   1 O.C.A., OBSERVATORIE DE NICE, B.P. 229, F-06304 NICE CEDEX 4, FRANCE
   1 Nuffield Radio Laboratories, Jodrell Bank, University of Manchester, Macclesfield, Cheshire SK11 9DL
   1 Nuffield Radio Astronomy Observatory, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DR, UK
   1 Nuffield Radio Astronomy Laboratory, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DR
   1 Nuclear Research Laboratory, Bhabha Atomic Research Centre, Bombay 400 085, India
   1 Northern Telecom Electronics, Ltd., Nepean, Ontario, Canada
   1 Northern Kentucky University, Highland Heights, KY, US
   1 Northern Kentucky University, Highland Heights, KY
   1 Northern Arizona University Astrophysical Observatory
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   1 North York Astronomical Association, Pickering, Canada
   1 North East Surrey College of Technology, Epsom, Surrey, England
   1 North East Surrey College of Technology, Epsom and Ewell, England
   1 North Carolina State University, Raleigh, North Carolina, US
   1 Nordic Optical Telescope, Santa Cruz, de La Palma, Spain
   1 Nordic Optical Telescope, Apartado 474, E-38700 Sta. Cruz de La Palma, Canarias, Spain
   1 Nijmegen Katholieke Universiteit, Nijmegen, Netherlands
   1 Nicolaus Copernicus Astronomical Centre, PolishAcademy of Science, ul. Bartycka 18, 00-716 Warsaw, Poland Institut fuer Astronomie und Astrophysik, Univ. Kiel, Olshausenstrasse 40, D-24098 Kiel, Germany
   1 News Limited, 2 Holt Street Surrey Hills, NSW 2010, Australia
   1 Newfoundland, Memorial University, St. Johns', Canada
   1 Newfoundland, Memorial University, Saint John's, Canada
   1 Newfoundland, Memorial University, Corner Brook, Canada
   1 New York Institute of Technology, Old Westbury, N.Y.
   1 New Mexico, University, Albuquerque, Bowling Green State University, OH
   1 New Mexico State University, White Sands, N. Mex.
   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
   1 New Jersey, William Paterson College, Wayne, N.J.
   1 Netherlands Foundation for Research in Astronomy, Postbus 2, AA, Dwingeloo NL-7990, The Netherlands
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   1 Naval Surface Warfare Center, White Oak, MD, US
   1 Natsionalna Astronomicheska Observatoriia, Smoljan, Bulgaria
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   1 National Tsing Hua University, Hsinchu, Taiwan
   1 National Tsing Hua University, Hsin-chu, Nationalist China
   1 National Tsing Hua Univ., Hsinchu, Taiwan
   1 National Taiwan Normal University, Taipei, Republic of China
   1 National Research Council, Ottawa, Ontario, Canada
   1 National Research Council of Canada, Victoria, BC, CA
   1 National Research Council of Canada, Herzberg Inst. for Astrophysics, Ottawa
   1 National Radio Astronomy Observatory, Socorro, NM and Charlottesville, VA
   1 National Radio Astronomy Observatory, P.O. Box O, Socorro, NM 87801, U.S.A.
   1 National Radio Astronomy Observatory, Edgemont Road, Charlottesville, VA 22903-2475, USA
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   1 National Optical Astronomy Observatories, Casilla, La Serena, Chile
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   1 National Laboratory for High Energy Physics, Tsukuba, Ibaraki, Japan
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   1 National Institute for Space Research, Sao Jose, Brazil
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   1 National Institute for Fusion Science, Nagoya, Japan
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   1 National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Post Bag 3, Pune University Campus, Ganeshkhind, Pune 411007, India
   1 National Centre for Radio Astrophysics, TIFR, Post Bag 3, Ganeshkhind, Pune 411007, India
   1 National Centre for Radio Astrophysics, TIFR, Post Bag 3, Ganeshkhind, Pune 411 007, India
   1 National Centre for Radio Astrophysics, Ganeshkhind, Pune, India
   1 National Central University, Taiwan, Republic of China
   1 National Central University, Chungli, Nationalist China
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   1 National Center for Supercomputing Applications, Champaign, IL
   1 National Bureau of Standards, Quantum Physics Div., Gaithersburg, Md.
   1 National Bureau of Standards, Quantum Electronics Div., Boulder, Colo.
   1 National Bureau of Standards, National Measurement Laboratory, Washington, D.C.
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   1 Nat. Radio Astronomy Observatory, Charlottesville, VA, US
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   1 Nat. Radio Astro. Obser., Green Bank, WV, US
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   1 Nat. Optical Astronomical Observatories, La Serena, Chile
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   1 Nansen Environmental and Remote Sensing Center, Solheimsviken, Norway
   1 Nanjing Normal University, Department of Physics, 122 Ninghai Road, Nanjing, Jiangsu 210024, China
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   1 NRAO, Charlottesville, VA, US AB, Leiden, Netherlands
   1 NRAO, 949 N. Cherry Av., Campus Building 65, Tucson , Arizona 85721-0655, U.S.A. and Department of Physics, Rensselaer Polytechnic Institute, Troy, NY 12180, U.S.A.
   1 NRAL, Jodrell Bank, Macclesfield, Cheshire
   1 NRAL, Jodrell Bank, Lower Withington, Cheshire SK11 9DG
   1 NRAL Jodrell Bank, University of Manchester, Macclesfield, Cheshire SK11 9DL, UK
   1 NR - Istituto di Fisica Cosmica e Tecnologie Relative, Via Bassini 15, 20133 Milano, Italy and Dip. Fisica, Universita DI milano, Via Celoria 16, 20133 Milano, Italy
   1 NORDITA, Blegdamsvej 17, 2100 Copenhagen, Denmark
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   1 NOAA, National Geodetic Survey, Rockville, MD
   1 NOAA, Lab. for Geosciences, Rockville, MD
   1 NFRA, Postbus 2, NL-7990 AA Dwingeloo, The Netherlands
   1 NEC Corp., Sensor Research Laboratory, Kawasaki, Japan
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   1 NASA. Jet Propulsion Lab., Cal. Inst. of Tech., Pasadena, CA, US
   1 NASA. Jet Propulsion Lab, Pasadena, CA, US
   1 NASA-Goddard Space Flight Center, Code 684.9, Building 21, Greenbelt, MD 20771, USA
   1 NASA, STDN Orroral Station, Canberra, Australia
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   1 NASA, Johnson Space Center, Space Physics Branch, Houston, Tex.
   1 NASA, Infrared Telescope Facility, Mauna Kea
   1 NASA, Infrared Telescope Facility, Hilo
   1 NASA, Infrared Analysis and Processing Center
   1 NASA, Goddard Space Flight Center, Solar Radiation Office, Greenbelt, MD
   1 NASA, Goddard Space Flight Center, Solar Maximum Mission Experimenters' Operations Facility, Greenbelt
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   1 NASA, Goddard Space Flight Center, Radio Astronomy Branch, Greenbelt, Md.
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   1 N. Copernicus Astronomical Center, Polish Academy of Science, ul. Bartycka 18, 00-716 Warsaw, Poland
   1 Museum National d'Histoire Naturelle, Laboratoire de Mineralogie
   1 Museu de Astronomia e Ciencias Afins, Sao Cristovao, Brazil
   1 Musee National des Sciences, Technique et Industrie, Paris, France
   1 Multiple Mirror Telescope Observatory, University of Arizona, Tucson, AZ 85721, USA
   1 Mullard Space Science Laboratory, Holmbury St Mary, Dorking RH5 6NT
   1 Mullard Space Science Lab., Surrey, UK
   1 Muenchen, Universitaets- Sternwarte, Munich, West Germany
   1 Mt. Stromlo and Siding Spring Observatories, Weston Creek, PO, ACT 2611, Australia
   1 Mt. Stromlo and Siding Spring Observatories, Australian National University, Weston Creek, ACT 2611 Austrlia
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   1 Mount Stromlo and Siding Spring Observatories, The Australian National University, Australia
   1 Mount Stromlo and Siding Spring Observatories, Australian National University, Weston Creek, ACT 2611, Canberra, Australia
   1 Mount Stromlo Observatory, Weston Creek, Australia
   1 Mount John University Observatory, Lake Tekapo, New Zealand
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   1 Mount Holyoke College, South Hadley, MA
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   1 Ministere de la Recherche et la Technologie, Departement des Sciences de l'Univers et de l'Espace, Paris, France
   1 Millipore Corp., Waters Chromatography Div., Milford, MA
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   1 Michigan State University, Lansing, Mich.
   1 Michigan State University, E. Lansing, Michigan, US
   1 Meudon, Observatoire, Meudon, Hauts-de-Seine, Paris VII, Universite, Paris, France
   1 Meteorological Research Inst., Tsukuba, Japan
   1 Messerschmitt-Boelkow-Blohm GmbH, Munich, Federal Republic of Germany
   1 Memorial Univ. of Newfoundland, Newfoundland, Canada
   1 McDonnell Douglas Research Laboratories, St. Louis, MO
   1 McDonnell Douglas Research Laboratories
   1 McDonald Observatory, The University of Texas at Austin, RLM 15.308, Austin, TX78712, USA
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   1 McDonald Observatory, Texas, University, Austin, TX
   1 McDonald Observatory, Fort Davis, Texas, University, Austin, Tex.
   1 Max-Plank-Institut fur Astrophysik, Karl-Schwarzschild-Str. 1, 85740 Garching, Germany
   1 Max-Planck-Istitut fur Astrophysik, Karl-Schwarzschild-Strasse 1, 85748 Garching bei Munchen, Germany
   1 Max-Planck-Institute fur Astrophysik, 85740 Garching, Germany
   1 Max-Planck-Institute for Aeronomy, D-37189 Katlenburg-Lindau, Germany
   1 Max-Planck-Institut fur extraterrestrische Physik, Postfach 1603, D-85740, Garching, Germany
   1 Max-Planck-Institut fur extraterrestrische Physik, Postfach 1063, D85740 Garching, Germany
   1 Max-Planck-Institut fur extraterrestrische Physik, Giessenbachstrasse, Postfach 1603, 85740 Garching, Germany
   1 Max-Planck-Institut fur extraterrestrische Physik, 85740 Garching bei Munchen, Germany
   1 Max-Planck-Institut fur extraterrestriche Physik, Giessenbachstrasse, 8046 Garching, Germany
   1 Max-Planck-Institut fur extraterrestische Physik, Giessenbachstr., D-85740 Garching, Germany
   1 Max-Planck-Institut fur Radioastronomie, Postfach 2024, D-53010, Bonn, Germany
   1 Max-Planck-Institut fur Radioastronomie, Auf dem Hugel 71, D-53121 Bonn, Germany
   1 Max-Planck-Institut fur Radioastronomie, Auf dem Hugel 69, D-53121 Bonn, Germany, p647gbr@mpifr-bonn.mpg.de
   1 Max-Planck-Institut fur Radioastronomie, Auf dem Hugel 69, 53121 Bonn, Germany tr@specklec.mpifr-bonn.mpg.de, khh@specklec.mpifr-bonn.mpg.de, ms@specklec.mpifr-bonn.mpg.de, weigelt@mpifr-bonn.mpg.de)
   1 Max-Planck-Institut fur Radioastronomie, Auf dem Hugel 69, 53121 Bonn, Germany
   1 Max-Planck-Institut fur Physik and Astrophysik, Karl-Schwarzschild Strasse 1, D-85740 Garching, Germany
   1 Max-Planck-Institut fur Kernphysik, W-69029 Heidelberg, Germany
   1 Max-Planck-Institut fur Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany
   1 Max-Planck-Institut fur Extraterrestrische Physik, Postfach 1603, Garching bei Munchen, 85740 Germany
   1 Max-Planck-Institut fur Extraterrestrische Physik, Postfach 1603, D85740 Garching, Germany
   1 Max-Planck-Institut fur Extraterrestrische Physik, Giessenbachstrasse, Garchi
   1 Max-Planck-Institut fur Extraterrestrische Physik, Giessenbachstrasse, D-85740 Garching, Germany
   1 Max-Planck-Institut fur Extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, Germany
   1 Max-Planck-Institut fur Extraterrestrische Physik, Giessenbachstrasse, 85740 Garching, Germany
   1 Max-Planck-Institut fur Extraterrestrische Physik, Giessenbachstrasse, 85740 Garching bei Munchen, Germany
   1 Max-Planck-Institut fur Extraterrestrische Physik, D-85478, Garching bei Munchen, Germany
   1 Max-Planck-Institut fur Extraterrestrische Physik, Aussenstelle Berlin, Rudower Chaussee 5, D-12489 Berlin, Germany
   1 Max-Planck-Institut fur Extraterrestriche Physik, Giessenbachstrasse, D-8046 Garching bei Munchen, Germany
   1 Max-Planck-Institut fur Astrophysik, Postfach 1523, D-85740 Garching bei Munchen, Germany
   1 Max-Planck-Institut fur Astrophysik, Postfach 1523, D-85740 Garching b. Munchen, Germany
   1 Max-Planck-Institut fur Astrophysik, Postfach 1523, 85740 Garching bei Munchen, Germany
   1 Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, 85740 Garching bei Munchen, Germany
   1 Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching, Germany
   1 Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild- Strasse 1, 85740 Garching, Germany
   1 Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild Strasse 1, D-85740 Garching, Germany
   1 Max-Planck-Institut fur Astrophysik, D-85740, Garching, Germany
   1 Max-Planck-Institut fur Astrophysik, D-85740 Garching bei Munchen, Germany
   1 Max-Planck-Institut fur Astrophysik, 1 Karl Schwarzschild Strasse, Garching bei Munchen, Germany
   1 Max-Planck-Institut fur Astronomie, Konigstuhl 17, D-69117 Heidelberg, Germany
   1 Max-Planck-Institut fuer extraterrestrische Physik
   1 Max-Planck-Institut fuer Physik und Astrophysik, Institut fuer extraterrestrische Physik, Garching, West Germany
   1 Max-Planck-Institut fuer Physik und Astro
   1 Max-Planck-Institut fuer Extraterrestrische Physik
   1 Max-Planck-Institut fuer Astrophysik, Garching
   1 Max-Planck-Institut fu Radioastronomie, Auf dem Hugel 69, D-53121 Bonn, Germany
   1 Max-Planck-Institut fu Astrophysik, Karl Schwarzschild-Str. 1, Postfach 15 23, 85740 Garching, Germany
   1 Max-Planck-Institut f\"ur Radioastronomie, Auf dem Hugel 69, 53121 Bonn, Germany
   1 Max-Planck-Inst. fuer Astrophysik, Garching, Muenchen, Germany
   1 Max-Planck-Inst. fuer Astrophysik, Garching bei Munich, Germany
   1 Max-Planck-Gesellschaft, AG Theoretische Vielteilschenphysik, Rostock University, Rostock 18051, Germany
   1 Max-Planck-Gesellschaft, AG Gravitationstheorie, Universitat Jena, Max Wien Platz 1, D-07743 Jena, Germany
   1 Max-Planck-Gesellschaft zur Foerderung der Wissenschaften, Jena, Germany
   1 Max-Planck-Gesellschaft zur Foerderung der Wissenschaften, Germany
   1 Max-Planck-Gesellschaft zur Foerderung der Wissenschaft, Jena, Germany
   1 Max-Planck Institut fur extraterrestrische Physik, D85740 Garching bei Munchen, Germany
   1 Max-Planck Institut fur Radioastronomie, Auf dem Hugel 69, D53121 Bonn, Germany
   1 Max-Planck Institut for Astrophysics, K. Schwarzschild Str. 1, D-85740 Garching bei Munchen, Germany and Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara, via Paradiso 12, I-44100 Ferrara, Italy
   1 Max--Planck--Institut fur Extraterrestrische Physik (MPE), Giessenbachstrasse, Postfach 1603, D-85740 Garching, Germany
   1 Max Planck Institute fur Astrophysik, Karl-Schwarzschild-Strasse 1, 85740 Garching bei Munchen, Germany
   1 Max Planck Institute for Extraterrestrial Physics, Garching bei Munchen, Munchen, Germany
   1 Max Planck Institut fur Astrophysik, Karl Schwarzschildstrasse 1, 85740 Garching-bei-Munchen, Germany
   1 Max Planck Institut fur Astronomie, Konigstuhl 17, D-69117, Heidelberg, Germany
   1 Matsusho Gakuen Junior College, Matsumoto, Japan
   1 Mathematics-Physics, University of Haifa at Oranim, Tivon 36006, Israel
   1 Mathematics Department, University of Manchester, Institute of Science and Technology, PO Box 88, Manchester M60 1QD, UK
   1 Mathematics Department, UMIST, PO Box 88, nanchester M60 1QD
   1 Mathematics Department, UMIST, PO Box 88, Sackville Street, Manchester M60 1QD
   1 Mathematics Department, UMIST, PO Box 88, Manchester M60 1QD
   1 Mathematical Sciences Consultants, Inc., Greenbelt, MD
   1 Mathematical Science Consultants, Inc., 1-A Ridge Road, Greenbelt, MD 20770, USA
   1 Martin Marietta Aerospace, Denver, Colo.
   1 Mark Resources, Inc., Marina del Rey, Calif.
   1 Marconi Applied Research Laboratory, Cambridge, England
   1 Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, England
   1 Mainz, Astronomische Arbeitsgemeinschaft, Mainz, West Germany
   1 Main Astronomical Observatory, Golosiiv, 252127 Kiev, Ukraine
   1 Main Astronomical Observatory of NationalAcademy of Sciences, Goloseevo, DSP-650, Kiev-22, Ukraine
   1 Magyar Tudomanyos Akademia, Csillagvizsgalo Intezet, Budapest, Hungary
   1 Magruder High School, Rockville, MD
   1 Madan Mohan Malaviya Engineering College, Gorakhpur, India
   1 MSSSO, Australian National University, Private Bag, Weston, ACT 2611, Australia
   1 MS 169-237, JET PROPULSION LAB., 4800 OAK GROVE DR., PAS
   1 MPI fur Kernphysik, Postfach 103980, D--69117 Heidelberg, Germany and DEMIRM, Observatoire de Paris, 61 Av. de l'Observatoire, 75014 Paris, France, present address: Laboratoire d'Astronomie Spatiale, Traverse du Siphon, F-13376 Marseille Cedex 12, France
   1 MPI fur Kernphysik, Postfach 103980, D--69117 Heidelberg, Germany
   1 MPI fur Astronomie, Konigstuhl, D--69117 Heidelberg, Germany
   1 MAX-PLANCK-INSTITUT FUR KERNPHYSIK, HEIDELBERG, GERMANY
   1 M.V. Lomonsov Moscow State University, Moscow, Russia
   1 Lyon, Ecole Normale Superieure, Lyons
   1 Lund, Tekniska Hogskolan, Lund, Sweden
   1 Lund Observatory, Box 43, S-221 00, Lund, Sweden
   1 Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona 85721, USA
   1 Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA
   1 Lunar and Planetary Laboratory, Gould-Simpson Building, University of Arizona, Tucson, AZ85721, USA
   1 Lunar and Planetary Laboratory, Gould-Simpson Building, University of Arizona, Tucson, AZ 85721, USA
   1 Lunar and Planetary Institute, 3600 Bay Area Boulevard, Houston, TX 77058, USA
   1 Louvain, Universite Catholique, Louvain-la-Neuve, Belgium
   1 Los Angeles Harbor College, Wilimington, CA, US
   1 Los Alamos National Laboratory, XTA, MS B220, Los Alamos, NM 87545, USA
   1 Los Alamos National Laboratory, Mail Stop D436, Los Alamos, NM 87545, USA
   1 London, University, Observatory, Mill Hill Park, Middx., England
   1 London, University College, Mullard Space Sciences Laboratory, Dorking, Surrey, England
   1 London, University College, Holmbury St. Mary, Surrey, England
   1 Lockheed Solar and Astrophysics Lab., Palo Alto, CA, US AD University College of London, Holmbury, UK
   1 Lockheed Missiles and Space Co., Sunnyvale, CA
   1 Lockheed Missiles and Space Co., Space Astronomy Group, Palo Alto, CA
   1 Lockheed Missiles and Space Co., Inc., Sunnyvale, Calif.
   1 Lockheed Martin Solar and Astrophysics Laboratory, 3251 Hanover Street, Palo Alto, CA 94304, USA
   1 Lockheed Engineering and Sciences Co., Las Cruces, NM
   1 Lockheed Engineering and Sciences Co., Houston, TX
   1 Liverpool John Moores University, Liverpool, UK
   1 Liverpool John Moores Univ., Liverpool, UK
   1 Litton Industries, Applied Technology, Sunnyvale, CA
   1 Lithuanian Academy of Sciences, Institute of Theoretical Physics and Astronomy, Vilnius, Lithuanian SSR
   1 Lisboa, Universdidade Tecnica, Lisbon, Portugal
   1 Lille III, Universite, Villenueve-d'Ascq, Nord, France
   1 Lick Observatory, University of California, Santa Cruz, CA 95064, USA
   1 Lick Observatory, California, University, Santa Cruz, CA
   1 Lick Observatory, California, University, Santa Cruz
   1 Lick Observatory California, University, Santa Cruz, CA
   1 Liberty Center High School, Liberty Center, OH
   1 Leyden, Sterrewacht, Leiden, Netherlands
   1 Leuven, Katholieke Universiteit, Heverlee
   1 Leuven Katholieke Univ., Heverlee, Belgium
   1 Les Illes Balears, Universitat, Mallorca, Spain
   1 Leiden, Sterrewacht, Rijksuniversiteit, Leiden, Netherlands
   1 Leiden, Rijksuniversiteit, Huygens Laboratorium, Leiden, Netherlands
   1 Leiden Southern Observatory, Hartbeespoortdam, Republic of South Africa
   1 Leiden Observatory, Postbus 9513, 2300RA Leiden, The Netherlands
   1 Leiden Observatory, NL--2300 RA Leiden, The Netherlands and Observatoire de Paris, Departement de Recherche Spatiale, URA CNRS 264, F--92195 Meudon Principal Cedex, France
   1 Leicester, University, University, Leicester, England
   1 Leicester, University, Leicester, Leics., England
   1 Lehrstuhl Astrophysik, Universitat Potsdam, Am Neuen Palais 10, D-14469 Potsdam, Germany
   1 Lecce, Universita and CNR, Gruppi Italiani di Fisica Cosmica, Italy
   1 Lebedev Physical Institute, Leninsky Prospect 53, Moscow 117924, Russia
   1 Lawrence Berkeley Laboratory and Center for Particle Astrophysics, Berkeley, CA, USA
   1 Lau Kuei Huat/S/Pte., Ltd., Singapore
   1 Lau Kuei Huat(s) Pte, Ltd., Singapore
   1 Lau Kuei Huat /S/ Pte., Ltd., Singapore
   1 Lau Kuei Huat /S/ Pte, Ltd., Singapore
   1 Lau Kuei Huat /S/ Private, Ltd., Singapore
   1 Lau Kuei Haut/S/Pte., Ltd., Singapore
   1 Las Campanas Observatory, Carnegie Institution of Washington, Casilla 601, La Serena, Chile
   1 Laboratory of Astronomy and Space Science, Goddard Space Flight Center, Code 681, Greenbelt, MD 20771, USA
   1 Laboratory of Astronomy and Geophysics, Hitotsubashi University, Kunitachi, Tokyo 187, Japan
   1 Laboratory for Space Research, Groningen, The Netherlands
   1 Laboratory for Space Research Leiden, Leiden, Netherlands
   1 Laboratory for Space Research Groningen, Groningen, Netherlands
   1 Laboratory for High Energy Astrophysics, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
   1 Laboratory for High Energy Astrophysics, Goddard Space Flight Center, Greenbelt, MD 20771, USA
   1 Laboratory for High Energy Astrophysics, Code 666, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA
   1 Laboratory for High Energy Astrophysics, Code 666, NASA, Goddard Space Flight Center, Greenbelt, MD 20771, USA
   1 Laboratory for High Energy Astrophysics, Code 660.2, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA
   1 Laboratory for High Energy Astrophysics, Code 600.2, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA
   1 Laboratory for Astrophysics, National Air and Space Museum, Smithsonian Institution, Washington DC, 20560, USA
   1 Laboratory for Astronomy and Solar Physics-Code 681, Goddard Space Flight Center, Greenbelt, MD 20771, USA
   1 Laboratory for Astronomy and Solar Physics, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
   1 Laboratory for Astronomy and Solar Physics, Code 684.1, NASA Goddard Space Flight Center, Greebelt, MD 20771, USA
   1 Laboratory for Astronomy and Solar Physics, Code 681, NASA/GSFC, Greenbelt, MD 20771, USA
   1 Laboratory for Astronomy and Solar Physics, Code 681, Goddard Space Flight Center, Greenbelt, MD 20771, USA
   1 Laboratorium voor Ruimteonderzoek, SRON, Postbus 800, NL-9700 AV Groningen, The Netherlands
   1 Laboratorio de Astrofisica Espacial y Fisica Fundamental, INTA, Apdo. Correos 50727, E-28080 Madrid, Spain and Instituto de Astrofisica de Andalucia, CSIC, Apdo. Correos 3004, C Sancho Panza s/n, E-18080 Granada, Spain
   1 Laboratorio de Astrofisica Espacial y Fisica Fundamental, INTA, Apdo. 50727, E-28080 Madrid, Spain
   1 Laboratorio de Astrofisica Espacial y Fisica Fundamental (LAEFF-INTA), PO Box 50727, E-28080 Madrid, Spain
   1 Laboratorio Nacional de Luz Sincrotron, Sao Paulo, Brazil
   1 Laboratorio Nacional de Astrofisica, Itajuba, Brazil
   1 Laboratoire de Physique de l'Ecole Normale Superieure, Paris, France
   1 Laboratoire de Physique Moleculaire des Hautes Energies, Peymeinade, Alpes-Maritimes, France
   1 Laboratoire de Photophysique Moleculaire, CNRS, Bat. 213, Universite Paris Sud, F-91405 Orsay, France <2>Institut d'Astrophysique Spatiale, CNRS, Bat. 121, <3>Laboratoire de Photophysique Moleculaire, CNRS, Bat. 213, Universite Paris Sud, F-91405 Orsay, France
   1 Laboratoire de Chimie-Physique des Materiaux Amorphes, CNRS, Bat. 490
   1 Laboratoire de Chimie de Coordination, Toulouse, France
   1 Laboratoire d'Astrophysique, Observatoire de Grenoble, Universite Joseph Fourier/CNRS, BP 53X, 38041 Grenoble Cedex, France
   1 Laboratoire d'Astrophysique, Observatoire de Grenoble, Universite Joseph Fourier, BP 53, F--38041 Grenoble Cedex 9, France
   1 Laboratoire d'Astrophysique, Observatoire de Grenoble, Universite J. Fourier, 38041 Grenoble cedex 9, France
   1 Laboratoire d'Astrophysique, Observatoire de Grenoble, BP 53, F-38041 Grenoble, Cedex 9, France
   1 Laboratoire d'Astrophysique de Toulouse, UMR 5572, GdR-PRC ISIS, Observatoire Midi-Pyrenees, 14 Avenue Edouard Belin, 31400 Toulouse, France, Present address: Laboratoire d'Astrophysique, URA 708, Observatoire de Grenoble, BP. 53X, 38041 Grenoble, France.
   1 Laboratoire d'Astrophysique de Toulouse, UMR 5572, GdR-PRC ISIS, Observatoire Midi-Pyrenees, 14 Avenue Edouard Belin, 31400 Toulouse, France
   1 Laboratoire d'Astrophysique de Toulouse, CNRS UMR 5572, Toulouse, France
   1 Laboratoire d'Astrophysique (and CERFACS),Observatoire Midi-Pyrenees, 14, Avenue Edouard Belin, F-31400 Toulouse, France
   1 Laboratoire d'Astronomie et de Geophysique, Rabat, Morocco
   1 Laboratoire d'Astronomie Spatiale, B.P.8, F-13376 Marseille cedex 12, France
   1 Laboratoire d'Astronomie Extragalactique et de Cosmologie, Observatoire de Meudon, 5, Place Jules Janssen, 92195 Meudon, France
   1 Laboratoire d'Annecy-le-Vieux de Physique des Particules, France
   1 Laboratoire "Astrophysique, Atomes et Molecules", Departement Atomes et Molecules en Astrophysique, Unite associee au CNRS No.~812, Observatoire de Paris-Meudon, 92190 Meudon, France
   1 Laboratoire "Astrophysique, Atomes et Molecules", Departement Atomes et Molecules en Astrophysique, Unite associee au C.N.R.S. No. 812, Observatoire de Paris-Meudon, 92190 Meudon, France
   1 Lab. de Spectrometrie Ionique et Moleculaire, Villeurbanne, France
   1 Lab. de Astrofisica Espacial y Fisica Fundamental, Madrid
   1 Lab. d'Electronique Philips, Limeil-Brevannes, France
   1 Lab. d'Astrophysique Extragalactique et de Cosmologie, Meudon, France
   1 La Plata Universidad Nacional CONICET
   1 LUND OBSERVATORY, BOX 1107, S-221 04 LUND, SWEDEN
   1 LUNAR AND PLANETARY LAB., UNIV. OF ARIZONA, TUCSON, AZ 85721
   1 LUNAR & PLANETARY LAB., UNIV. OF ARIZONA
   1 LAEFF, Apartado 50727, 28080-Madrid, Spain
   1 L. Figl-Observatorium fuer Astrophysik, Vienna, Austria
   1 Kyung Hee University, Seoul, Republic of Korea
   1 Kyoto Pharmaceutical University, Yamashina, Kyoto 607, Japan
   1 Kwasan and Hida Observatories, Kyoto Univ., Kyoto, Japan
   1 Kutchan Agricultural High School, Abuta, Japan
   1 Kungliga Svenska Vetenskapsakademien, Stockholm, Sweden
   1 Krakow Uniwersytet, Obserwatorium Astronomiczne, Krakow, Poland
   1 Kozmikus Geodeziai Obszervatorium, Budapest, Hungary
   1 Korea National Univ. of Education, Choongbuk, Republic of Korea
   1 Korea Institute of Technology, Taejon, Republic of Korea
   1 Konkoly Obser. of the Hungarian Academy of Sciences, Budapest, Hungary
   1 Kongju National Univ., Choongnam, Republic of Korea
   1 Kitt Peak National Observatory, PO Box 26732, Tucson, AZ 85726-6732, USA. E-mail: courteau@noao.edu
   1 Kitt Peak National Observatory, National Optical Astronomy Observatories, P.O. Box 26732, Tucson, AZ 85726, U.S.A.
   1 Kitt Peak National Observatory, 950 N. Cherry Avenue, Tucson, AZ85726, USA
   1 Kiso Observatory, Tokyo Univ., Mitake, Japan
   1 Kingston, Queen's University, Kingston, Ontario, Canada
   1 Kings College, The Strand, London WC2R 2LS, UK
   1 Kings College, The Strand, London WC2R 2LS
   1 King Asud Univ. College of Science, Riyadh, Saudi Arabia
   1 Kiel, Universitaet, Institut fuer theoretische Physi
   1 Kiel, Universitaet, Institut fuer theoretische Ph
   1 Kiel, Univ., Inst. fuer Theoretische Physik und Sternwarte
   1 Kiel, Institut fuer Theoretische Physik und Sternwarte, Federal Republic of Germany
   1 Keystone Junior College, La Plume, Pa.
   1 Kernfoschungszentrum Karlsruhe GmbH, Karlsruhe, West Germany
   1 Kernforschungszentrum Karlsruhe, GmbH, Karlsruhe, West Germany
   1 Kernforschungszentrum Karlsruhe GmbH, Institut fuer angewandte Kernphysik, Karlsruhe, West Germany
   1 Kernforschungszentrum Karlsruhe GmbH, Institut fuer Kernphysik III, Karlsruhe, West Germany
   1 Kernforschungszentrum Karlsruhe GmbH, Institut fuer Kernphyik III, Karlsruhe, West Germany
   1 Kernforschungszantrum Karlsruhe GmbH, West Germany
   1 Kernforschungsanlage Juelich GmbH, Institut fuer Chemie III, Federal Republic of Germany
   1 Kepteyn Astronomical Institute, Groningen, Netherlands
   1 Kensington School of Physics, University of New South Wales, Sydney, Australia
   1 Kennesaw State College, Marietta, GA, US
   1 Keldysh Institute of Applied Mathematics, Academy of Sciences, 125047 Moscow, Russia
   1 Keele University, Department of Physics, Keele, Staffordshire ST5 5BG
   1 Keele University, Department of Physics, Keele ST5 5BG, UK
   1 Keele Univ., Keele, Staffordshire, England
   1 Kazakh Academy of Sciences, Astrophysical Institute, Alma Ata, Kazakhstan
   1 Kawasaki Heavy Industries, Ltd., Kakamigahara, Japan
   1 Kawasaki Heavy Industries, Ltd., Gifu Technical Institute, Kakamigahara, Japan
   1 Kawasaki Heavy Industries, Ltd., Gifu Technical Inst., Kakamigahara, Japan
   1 Kawasaki Heavy Industries, Ltd., Aerospace Engineering Div., Kakamigahara, Japan
   1 Karlsruhe, Kernforschungszentrum, Karlsruhe, West Germany
   1 Karl-Schwarzschild-Observatorium, Tautenburg, German Democratic Republic
   1 Karl-Schwarzschild Observatorium, Tautenburg, Federal Republic of Germany
   1 Karl-Schwarzschild Observatorium, Tautenburg, East Germany
   1 Kapteyn Instituut, Rijksuniversiteit Groningen, Postbus 800, 9700 AV, Groningen, The Netherlands
   1 Kapteyn Instituut, PO Box 800, 9700 AV, Groningen, Netherlands
   1 Kapteyn Instituut P.O. Box 800, 9700 AV Groningen, The Netherlands, e-mail: bianca@astro.rug.nl, and Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK, and Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ, UK
   1 Kapteyn Institute, PO Box 800, 9700 AV Groningen, The Netherlands
   1 Kapteyn Astronomical Institute, PO Box 800, NL-9700 AV Groningen, The Netherlands
   1 Kapteyn Astronomical Institute, Groningen University, Postbus 800, 9700 AV Groningen, The Netherlands
   1 Kapteyn Astron. Inst., Groningen, The Netherlands
   1 Kapetyn Astronomical Inst., Groningen, Netherlands
   1 Kansas, State University of Agriculture and Applied Science, Manhattan, Kan.
   1 Kansas State University of Agriculture and Applied Science, Manhattan, KS
   1 Kansas State University of Agriculture and Applied Science, Manhattan
   1 Kangwon National Univ., Chun-Cheon, Korea
   1 Kanazawa Institute of Technology, Kanazawa, Ishikawa, Japan
   1 Kanagawa Prefectural College, Japan
   1 Kamerlingh Onnes Laboratorium, Leiden, Netherlands
   1 Kaman Instruments, Colorado Springs, CO
   1 KYOTO UNIV., DEPT. OF APPLIED MATHEMATICS & PHYSICS, KYOTO 606, JAPAN
   1 KFKI Research Inst. for Particle and Nuclear Physics, Budapest, Hungary
   1 KAMAS STREET, NO. 2, PORTLAND, OR 97232
   1 Joint Observatory for Cometary Research, Soccoro, N. Mex.
   1 Joint Institute for VLBI in Europe, Radio Observatory, PO Box 2, 7990 AA Dwingeloo, The Netherlands
   1 Joint Institute for Laboratory Astrophysics, University of Colorado and National Institute of Standards and Technology, Boulder, CO 80309-0440, USA
   1 Joint Institute for Laboratory Astrophysics, National Bureau of Standards, Quantum Physics Div., Boulder, CO
   1 Joint Inst. for VLBI in Europe, Dwingeloo, Netherlands
   1 Joint Center for Mesoscale Meteorology, University of Reading, Reading, UK and Visiting Fellow, Astronomy Centre, Univ. Sussex, Falmer, Brighton, BN1 9QH, UK
   1 Joint Astronomy Centre, 660 N. A`ohoku Place, University Park, Hilo, Hawaii 96720, USA
   1 Joint Astronomy Centre, 660 N. A`ohoku Place, University Park, Hilo HI96720, USA
   1 Joint Astronomy Centre, 660 N. A'oku Place, Hilo, Hawaii 96720, USA
   1 Joint Astronomy Centre, 660 A'ohoku Place, University Park, Hilo, Hawaii 96720, USA
   1 Joint Astronomy Centre, 600 N. A`ohoku Place, Hilo, HI 96720, USA
   1 Joint Astronomy Centre, 600 N. A `ohoku Place, Hilo, HI 96720, USA
   1 Johns Hopkins University, Johns Hopkins Road, Laurel, MD 20723-6099, USA
   1 Johns Hopkins University, Homewood Campus, Baltimore, MD 21260, USA
   1 Johns Hopkins University, Homewood Campus, 3400 North Charles Street, Baltimore, MD 21218, USA
   1 Johns Hopkins University, Department of Physics & Astronomy, Baltimore, MD 21218, USA
   1 Johns Hopkins University, Charles & 34th Street, Bloomberg Center, Baltimore, MD 21218, USA
   1 Johns Hopkins University, Applied Physics Laboratory, Laurel, Md.
   1 John-Moores University, Liverpool, England, UK
   1 John von Neumann National Supercomputing Center, Princeton, NJ
   1 Jet Propulsion Laboratory, Pasadena, California, US
   1 Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
   1 Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
   1 Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
   1 Jet Propulsion Laboratory at Cal Tech, Pasadena, CA, US
   1 Jet Propulsion Lab., California Inst. of Tech., 4800 Oak Grove Dr., Pasadena, CA 91109
   1 Jet Propulsion Lab, Calif. Inst. of Tech., Pasadena, CA, US
   1 Jeremiah Horrocks and Wilfred Hall Observatories, Preston, Australia
   1 Jamieson Science and Engineering, Inc., Felton
   1 Jamieson Science and Engineering, Inc.
   1 Jamieson Science & Engineering, Inc., Scotts Valley, CA, US
   1 Jamieson Science & Engineering, Inc., Scotts Valley
   1 James Clerk Maxwell Telescope, Hilo, HI
   1 Jameison Science and Engineering, Scotts Valley, California, US
   1 JIVE, Radiosterrenwacht Dwingeloo, Dwingeloo, The Netherlands
   1 JILA, Campus Box 440, Boulder, CO 80309-0440, USA
   1 JILA and Department of Astrophysical, Planetary and Atmospheric Sciences, Box 440, University of Colorado, Boulder, CO 80309, USA
   1 Istituto per le Applicazioni Interdisciplinari della Fisica/CNR, Via Archirafi 36, I-90123 Palermo, Italy
   1 Istituto di Tecnologia e Studio delle Radiazioni Extraterrestri del C.N.R., Via Gobetti, 101, 40129 Bologna, Italy
   1 Istituto di Spettroscopia Molecolare del C.N.R., Via Gobetti, 101, 40129 Bologna, Italy
   1 Istituto di Rastronomia, C.P. 141, I-96017, Noto (SR), Italy
   1 Istituto di Radioastronomia, C.N.R. via Gobetti 101, Bologna, Italy
   1 Istituto di Radioastronomia del CNR, via Irnerio 46, J-40126, Bologna, Italy
   1 Istituto di Radioastronomia del CNR, via Irnerio 46, 40126 Bologna, Italy
   1 Istituto di Radioastronomia del CNR, Via P. Gobetti 101, 40129 Bologna, Italy
   1 Istituto di Radio Astronomia del CNR, via Gobetti 101, 40129 Bologna, Italy
   1 Istituto di Fisica dello Spazio Interplanetario, Frascati, Italy
   1 Istituto di Fisica dell'Universita, Bologna, Italy
   1 Istituto di Fisica dell'Universita di Palermo, Bologna, Italy
   1 Istituto di Fisica del'Universita, Via Archirafi 36, 90123 Palermo
   1 Istituto di Fisica Sperimentale, Istituto Universitario Navale, via A. De Gasperi 5, I-80125, Italy
   1 Istituto di Fisica Generale dell'Universita, Turin, Italy
   1 Istituto di Fisica Generale dell'Univ., Torino, Italy
   1 Istituto di Fisica Generale Applicata, Via Brera 28, 20121 Milano, Italy
   1 Istituto di Fisica Cosmica del C.N.R., Milano, Italy
   1 Istituto di Astronomia, Universita di Catania, Viale A. Doria 6, I-95125 Catania, Italy
   1 Istituto di Astronomia dell' Universita and C.N.R.-G.N.A. Unita di Ricerca di Catania, Citta Universitaria, I-95125 Catania, Italia e-mail: fcatalano@astrct.ct.astro.it
   1 Istituto di Astrofisica Spaziale, CNR, via Enrico Fermi 21, I-00044 Frascati, Italy
   1 Istituto di Astrofisica Spaziale, CNR, C.P. 67, 00044 Frascati, Italy, caputo@saturn.ias.fra.cnr.it
   1 Istituto Tecnologie e Studio Radiazioni Extraterrestri, CNR, Via Gobetti, 101, 40129 Bologna, Italy and Dipartimento di Fisica, Universita di Ferrara, Via Paradiso, 11, 44100 Ferrara, Italy
   1 Istituto Tecnico Industriale Statale 'F. Severi', Padova, Italy
   1 Istituto TESRE, Consiglio Nazionale delle Ricerche, Via Gobetti 101, I-40129 Bologna, Italy
   1 Istituto T.E.S.R.E., Area della Ricerca del CNR, via Gobetti 101, I-40129, Bologna, Italy and ESA Villafranca Satellite Tracking Station, Apto. 50727, CAM IDT, E-28080 Madrid, Spain
   1 Istituto Superiore Poste e Telecomunicazioni, Rome, Italy
   1 Istituto Nazionale di Ottica, Largo E. Fermi 6, I--50125 Firenze, Italy
   1 Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara, via Paradiso 12, I-44100 Ferrara, Italy
   1 Istituto Elettrotecnico Nazionale Galileo Ferraris, Turin, Italy
   1 Istituto Astronomico, Universita "La Sapienza", via G.M. Lancisi 29, I-00161 Roma, Italy
   1 Istanbul Technical University, Istanbul, Turkey
   1 Israel Atomic Energy Commission, Soreq Nuclear Research Centre, Yavne
   1 Israel Atomic Energy Commission, Negev Nuclear Research Center, Beersheba
   1 Isaac Newton Group, Royal Greenwich Observatory, Apartado 321, 38780 Santa Cruz de La Palma, Spain
   1 Isaac Newton Group, Apartado de Correos 368, Santa Cruz de La Palma, 38750 Tenerife, Canary Islands, Spain
   1 Isaac Newton Group of Telescopes, Royal Greenwich Observatory, Apartado 321, 38780 Santa Cruz de la Palma, Tenerife, Spain
   1 Ioffe Physico-Technical Institute, St Petersburg, 191021, Russia
   1 Interuniv. Regional Center for Astrophysics and Cosmology
   1 Interstellar Media, San Francisco, Calif.
   1 International Statistics and Research Corp., British Columb, Canada
   1 International School for Advanced Study, Trieste, Italy
   1 International School for Advanced Studies, Via Beirut 2-4, 34013 Trieste, Italy, e-mail: fkliu@sissa.it and Yunnan Observatory, Academia Sinica, P.O.Box 110, Kunming 650011, China
   1 International School for Advanced Studies, Via Beirut 2, 34014 Trieste, Italy
   1 International School for Advanced Studies, SISSA, Strada Costiera 11, 34014 Trieste, Italy
   1 International School for Advanced Studies (SISSA), Via Beirut n.2-4, 34013 Trieste, Italy
   1 International School for Advanced Studies (SISSA), Trieste, Italy
   1 International School for Advanced Studies (SISSA), International Centre for Theoretical Physics, Strada Costiera 11, 34014 Trieste, Italy
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   1 International Occultation Timing Association, Tokyo, Japan
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   1 Instytut Fizyki Jadrowej, Krakow, Poland
   1 Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200 B, B-3001 Heverlee, Belgium
   1 Instituto di Spettroscopia Molecolare, CNR, Via P. Gobetti, 101, 40129 Bologna, Italy
   1 Instituto di Radioastronomica, CNR, via Gobetti 101, Bologna, Italy
   1 Instituto di Radioastronomia Milimetrica, Granada, Spain
   1 Instituto di Fisica dell'Atmosfera del CNR, Rome, Italy
   1 Instituto di Fisica del'Universita, Palermo, Bologna, Italy
   1 Instituto de Tecnica Aeroespacial, Torrejon de Ardoz, Spain
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   1 Instituto de Radio Astronomia Milimetrica, Granada, Spain
   1 Instituto de Fisica, Universidad Nacional Autonoma de Mexico, Apartado Postal 20-364, 01000 Mexico DF
   1 Instituto de Fisica de Cantabria, Avda. de los Castros s/n 39005, Santander, Spain
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   1 Instituto Argentino de Radioastronomia, C.C. 5, (1894) Villa Elisa, Prov. de Bs. As., Argentina
   1 Institutionen for Astronomi, Lund, Sweden
   1 Institute of Theoretical and Experimental Physics, Moscow, Russia
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   1 Institute of Solar-Terrestrial Physics, P.O. Box 4026, Irkutsk, Russia
   1 Institute of Radiophysics and Electronics, National Academy of Sciences of Ukraine, 12 Proskura Str., 310085, Kharkov, Ukraine
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   1 Institute of Physics, Gostauto 12, Vilnius 2600, Lithuania
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   1 Institute of Geophysics & Planetary Physics, Lawrence Livermore National Laboratory, PO Box 808, Livermore, CA 94551-9900, USA
   1 Institute of Astronomy, University of Tokyo, Mitaka, Tokyo 181, Japan
   1 Institute of Astronomy, University of St Petersburg, Stary Peterhof, St Petersburg 198904, Russia
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   1 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK; e-mail: michael@astro.as.utexas.edu
   1 Institute of Astronomy, Bulgarian Academy of Sciences, 72 Tsarigradsko chaussee, BG--1784 Sofia, Bulgaria
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   1 Institute of Astronomy of the Russian Academy of Sciences, 48 Piatnitskaya St., 109017 Moscow, Russia
   1 Institute of Astronomy and Department of Physics, National Central University, Chung-Li, Taiwan 32054, Republic of China
   1 Institute fur Theoretische Physik und Sternwarte, Universitat Kiel, Germany
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   1 Institute for Space and Terrestrial Science, North York, Canada
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   1 Institute for Space Observations, Schenectady, NY
   1 Institute for Space Observations, Charleston, SC
   1 Institute for Space Observations, 1434 Fairfield Avenue, Charleston, SC 29407, USA
   1 Institute for Space Observations and Union College, Schenectady, NY 12308, USA
   1 Institute for Particle Physics, University of California, Santa Cruz, CA 95064, USA
   1 Institute for Nuclear Research, Russian Academy of Sciences, Mowcow 117312, Russia
   1 Institute for Geophysics and Planetary Physics, Livermore, CA, US
   1 Institute for Computer Applications in Science and Engineering, Hampton, VA
   1 Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu HI 96822, USA
   1 Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ, UK
   1 Institute for Astronomy, Universe of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK
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   1 Institute for Astronomy, 2680 Woodlawn Dr., Honolulu, HI 96822, USA
   1 Institute for Astronomy of the Russian Academy of Sciences, Pyatnitskaya Str. 48, 109017 Moscow, Russia
   1 Institute for Astronomy and Astrophysics, University of Wurzburg, Am Hubland, D-97074 Wurzburg, Germany
   1 Institute d'Astrophysique de Paris, CNRS, 98bis Boul. Arago, 75014 Paris, France
   1 Institut fur theoretische Physik, Universitat Basel, Basel, Switzerland
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   1 Institut fur Astronomie, Universitat Wien, Turkenschanzstrasse 17, A-1180 Wien, Austra
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   1 Institut fuer Astrophysik, Wuerzburg, West Germany
   1 Institut fuer Astrophysik, Potsdam, Federal Republic of Germany
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   1 Institut di Fisica Cosmica del CNR, Milano, Italy
   1 Institut des Hautes Etudes Scientifiques, Bures-sur-Yvette, France
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   1 Institut d'Estudis Espacials de Catalunya, Research Unit (CSIC), Edf. Nexus-104-c/Gran Capitan 2-4, 08034 Barcelona, Spain
   1 Institut d'Astrophysique, Universite de Liege, avenue de Cointe 5, B-4000 Liege, Belgium
   1 Institut d'Astrophysique, Universite de Liege, Avenue de Cointe 5, B-4000 Liege, Belgium e-mail: u2148ap@vm1.ulg.ac.be
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   1 Institut d'Astrophysique du CNRS, 98 bis Boulevard Arago, F-75014 Paris, France
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   1 Institut d'Astrophysique de Paris, CNRS, 98 bis Bd. Arago, F-75014, Paris, France
   1 Institut d'Astrophysique de Paris, CNRS UPR 341, F--75014 Paris, France
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   1 Institut d'Astrophysique de Paris, 98 bis boulevard Arago, F-75014 Paris, France
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   1 Institut d'Astronomie, d'Astrophysique et de Geophysique, Brussels, Belgium
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   1 Institut Teoreticheskoi i Eksperimental'noi Fiziki, Moscow, USSR
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   1 Instituo de Astronomia, Mexico D.F., Mexico
   1 Inst. of Theoretical Physics, Goteborg, Sweden
   1 Inst. of Theoretical Physics and Astronomy, Vilnius, Lithuania
   1 Inst. of Space Science and Astronomy, Daejoen, Republic of Korea
   1 Inst. of Geophysics and Planetary Physics, Livermore, CA, US
   1 Inst. of Defense Analyses, Alexandria, VA
   1 Inst. of Astronomy Nicolaus Copernicus Univ., Torun, Poland
   1 Inst. fur Astronomie und Astrophysik, Univ. Kiel. Olshausenstrasse 40, 24098 Kiel, Germany
   1 Inst. fuer Theoretische Physik und Sternwarte, Kiel, Germany
   1 Inst. fuer Theoretische Astrophysik, Heidelberg, Germany
   1 Inst. fuer PAH-Forschung, Greifenberg am Ammersee, Germany
   1 Inst. fuer Astronomie & Astrophysik der Univ Wurzburg, Wurzburg, Germany
   1 Inst. fuer Angewandte Geodaesie, Frankfurt am Main, Germany
   1 Inst. for Space and Terrestrial Science, Toronto, Ontario, Canada
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   1 Inst. for Solar-Terrestrial Physics, Irkutsk, Russia
   1 Inst. for Molecular Science, Myodaiji, Okazaki, Japan
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   1 Inst. di Fisica dell'Atmosfera CNR, Rome, Italy
   1 Inst. di Fisica Generale dell'Univ., Torino, Italy
   1 Inst. di Cosmogeofisica del CNR Cosrso Fiume, Torina, Italy
   1 Inst. di Astrofisica Spaziale del Consiglio, Frascati, Italy
   1 Inst. de FisicaCorpuscular, Burjasot, Spain
   1 Inst. d'Astrophysique de Paris, CNRS, Paris, France
   1 Inst. Teoreticheskoi i Eksperimental'noi Fiziki, Moscow, Russia
   1 Inst. Nacional de Tecnica Aeroespacial, Villafranca del Castillo, Spain
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   1 Freiburg, Universitaet, Freiburg im Breisgau, Federal Republic of Germany
   1 Fraunhofer Institut fuer physikalische Messtechnik, Freiburg-im-Breisgau, West Germany
   1 Foundation for Research and Tech., Crete, Greece
   1 Forsvarets Forsoks Institutt, Kjeller, Norway
   1 Forsvarets Forsknings Institutt, Kjeller, Norway
   1 Ford Aerospace and Communications Corp., Detroit, MI
   1 Fonds de la Recherche Fondamentale Collective, Brussels, Belgium
   1 Fokker Aircraft Industries, Space Science Div., Schiphol, Netherlands
   1 Fokker Aircraft Industries, Space Div., Schiphol
   1 Flower and Cook Observatory, Philadelphia, Pa
   1 Florida International University, Miami, FL, US
   1 Florida Atlantic University, Boca Raton, FL, US
   1 Flinders University of South Australia, Bedford Park, Australia
   1 Firenze, Universitaand CNR, Gruppi Italiani di Fisica Cosmica, Florence, Italy
   1 Firenze, Universita and CNR, Gruppi Italiani de Fisica Cosmica, Florence, Italy
   1 Figl-Observatorium fur Astrophysik, Vienna, Austria
   1 Figl Observatory for Astrophysics, Vienna, Austria
   1 Figl Observatorium fur Astrophysik, Vienna, Austria
   1 Figl Observatorium fuer Astrophysik, Vienna, Austria
   1 Fernbank Science Center Observatory, Atlanta, Ga.
   1 Fermilab, MS 127, PO Box 500, Batavia, IL 60510, USA
   1 Fermi National Laboratory, PO Box 500, Batavia, IL 60510, USA
   1 Fermi National Accelerator lab., Batavia, IL, US
   1 Fermi National Accelerator Laboratory, Chicago, IL
   1 Federal Institute of Technology, Zurich, Switzerland
   1 Federal Inst. of Tech. (ETH), Zurich, Switzerland
   1 Federal Inst. Tech. (ETH), Zurich, Switzerland
   1 Fakultat fur Physik, Universitat Konstanz, PF 5560 M678 D-78434 Konstanz, Germany
   1 Faculty of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan
   1 Faculty of Education, Kochi University, Kochi 780, Japan
   1 Faculty of Business & Technology, University of Western Sydney Macarthur, PO Box 555, Campbeltown, NSW 2560, Australia
   1 Faculty of Business & Technology, University of Western Sydney Macarthur, PO Box 555, Campbelltown, NSW 2560, Australia
   1 Facultad de Ciencias, Salamanca, Spain
   1 Facultad de Ciencias, Montevideo, Uruguay
   1 Facultad de Ciencias Fisicas y Matematicas, Departamento de Fisica, Casilla 4009, Concepcion, Chile rmennick@gauss.cfm.udec.cl
   1 Facultad de Ciencias Astronomicas y Geofisicas, Av. Paseo del Bosque s/n, 1900 La Plata, Argentina
   1 Fachhochschule Niederrhein, Krefeld, Germany
   1 Fachhochschule Niederrhein, Krefeld, Federal Republic of Germany
   1 Fachhochschule Bielefeld, Bielefeld, West Germany
   1 FOMI Satellite Geodetic Observatory, Budapest, Hungary
   1 FOM-Institut voor Plasmafysica, Nieuwegein, Netherlands
   1 FOM, Instituut voor Plasmafysica, Nieuwegein, Netherlands
   1 FOM, Instituut voor Plasma-Fysica, Nieuwegein, Netherlands
   1 Exxon Research and Engineering Corporate Research Science Laboratory, Linden, NJ
   1 Exxon Corporate Research Science Laboratories, Linden, NJ
   1 European Space Information System, Frascati, Italy
   1 European Space Agency, Noordwijk, the Netherlands
   1 European Space Agency, Noordwijk, The Netherlands
   1 European Southern Observatory, Karl-Schwarzschild-Strasse 2, D- 85748 Garching bei Munchen, Germany
   1 European Southern Observatory, Karl-Schwarzschild-Strabetae 2, D-85748 Garching bei Munchen, Germany
   1 European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching bei Munchen, Germany
   1 European Southern Observatory, Karl-Schwarzschild Str., D-85748 Garching bei Munchen, Germany
   1 European Southern Observatory, Karl Schwarzschild Strasse 2, D-85748 Garching, Germany
   1 European Southern Observatory, Karl Schwarzschild Strasse 2, D- 85748 Garching, Germany
   1 European Southern Observatory, K. Schwarzschild Str. 2, D-85748 Garching, Germany
   1 European Southern Observatory, Castilla 19001, Santiago, Chile
   1 European Southern Observatory, Casilla 19001, 19 Santiago, Chile
   1 European Southern Observatory, Alonso de Cordova 3107, Casilla 19001, Santiago, Chile
   1 European Southern Observatory at La Silla, La Serena, Chile
   1 European Science Foundation, Strasbourg, France
   1 European Laboratory for Non-Linear Spectroscopy, Florence, Italy
   1 European Laboratory for Non Linear Spectroscopy, Florence, Italy
   1 European Incoherent Scattering Scientific Association, Sodankyla, Finland
   1 Etudes Techniques et Constructions Aerospatiales, S.A., France
   1 Estonian Academy of Sciences, Institute for Astrophysics and Atmospheric Physics, Tartu, Estonia
   1 Escuela Tecnica Superior de Ingenieros de Telecomunicacion, Barcelona, Spain
   1 Escuela Tecnica Superior de Ingenieros de Caminos, Canales y Puertos, Barcelona, Spain
   1 Escuela Tecnica Superior de Ingenieros Industriales, Madrid, Spain
   1 Erindale College, Misissauga, Canada
   1 Ente Nazionale per l'Energie Alternative, Laboratorio Dati Nucleari, Bologna, Italy
   1 Enrico Fermi Institute, University of Chicago, 5640 S. Ellis Ave, Chicago, IL 60637, USA
   1 Energy/Environmental Research Group, Tucson, AZ
   1 Energy/Environmental Research Group, Inc., East Tucson
   1 Electronic Engineering Laboratory, The University of Kent, Canterbury, Kent CT2 7NT, UK
   1 Electronic Engineering Laboratories, The University of Kent at Canterbury, Canterbury CT2 7NT, UK
   1 Electronic Data Systems, Inc., Alexandria, VA
   1 El Camino College, El Camino College, Calif.
   1 Eidgenoessische Sternwarte, Zurich, Switzerland
   1 Ege University, Observatory, Bornova-Izmir, Turkey
   1 Edinburgh, Royal Observatory, UK Schmidt Telescope Unit, Coonabarabran, New South Wales, Australia
   1 Edinburgh Royal Observatory, Coonbarabran, New South Wales, Australia
   1 Ecole et Observatoire de Physique du Globe, Strasbourg, France
   1 Ecole Normale Superieure, 75005 Paris, France
   1 Ecole Normale Superieure de l'Enseignement Technique, Cachan, France
   1 Ecole Normale Superieure de Lyon, Laboratoire de Physique, CNRS, 46 Allee d'Italie, F-69364 Lyon cedex 07, France
   1 Ecole Normale Superieure de Jeunes Filles, Montrouge, France
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   1 Ecole Nationale Superieure de l'Aeronautique et de l'Espace, Toulouse, France
   1 Ecole Nationale Superieure d'Aeronautique et de l'Espace, Toulouse, France
   1 Eastman Kodak, Scientific Imaging Systems, 4 Science Park, New Haven, CT 06511, USA
   1 East Tennessee State University, Johnson City, TN
   1 EURATOM and Max-Planck-Institut fuer Plasmaphysik, Garching, Federal Republic of Germany
   1 EURATOM and Kernforschungsanlage Juelich GmbH, Institut fuer Plasmaphysik, Juelich, West Germany
   1 EURATOM and Commissariat al'Energie Atomique, Centre d'Etudes Nucleaires de Fontenay-aux-Roses, Fontenay-aux-Roses, Hauts-de-Seine, France
   1 EURATOM and Commissariat a l'Energie Atomique, Departement de la Physique du Plasma et de la Fusion Controlee, Fontenay-aux-Roses, Hauts-de-Seine, France
   1 EURATOM and Commissariat a l'Energie Atomique, Departement de Physique du Plasma et de la Fusion Controlee, Fontenay-aux-Roses, Hauts-de-Seine, France
   1 EURATOM and Comitato Nazionale per l'Energia Nucleare, Centro Gas Ionizzati, Frascati, Italy
   1 EURATOM and Atomic Energy Establishment, Culham Laboratory, Abingdon, England
   1 ESO, Casilla 19001, Santiago 19, Chile
   1 ESO, Alonso de Cordova 3107, Vitacura, Casilla 19001, Santiago 19, Chile
   1 ESIS, Information Systems Division of ESA, Frascati, Italy
   1 ESA/ESTEC-Scientific Directorate, Noordwijk, Netherlands
   1 ESA/ESTEC, Noordwijk, The Netherlands
   1 ESA, Space Telescope European Coordinating Facility, Garching, West Germany
   1 ESA, Space Telescope - European Coordinating Facility, Garching, Germany
   1 ESA, Space Science Dept., Paris, France
   1 ESA, Space Science Dept., Nordwijk, Netherlands, Space Telescope Science Institute, Baltimore, MD
   1 ESA, Space Science Dept., Nordwijk, Netherlands, Osservatorio Astronomico, Padua, Italy
   1 ESA, Space Science Dept., Nordwijk, Netherlands
   1 ESA, Space Science Dept., Delft, Netherlands
   1 ESA, Space Science Department, Noordwijk, Netherlands
   1 ESA, Neuilly-sur-Seine, Hauts-de-Seine, France
   1 ESA, International Ultra-Violet Explorer Satellite Tracking Station, Madrid, Spain
   1 ESA, IUE Observatory, PO Box 50727, E-28080 Madrid, Spain, Affiliated to the Astrophysics Division, Space Science Department, ESTEC
   1 ESA, European Space Operations Centre, Darmstadt, West Germany
   1 ESA, European Space Operations Centre, Darmstadt, Germany
   1 ESA, European Space Operations Centre, Darmstadt
   1 ESA, Astronomy Section, Noordwijk, Netherlands
   1 ESA, Astronomy Div. Noordwijk, Netherlands
   1 ESA secondment, Space Telescope Science Institute, Baltimore, MD 21218, USA
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   1 ESA IUE Observatory, Apartado 50727, 28080-Madrid, Spain and Center for Astrophysics, University of Science and Technology of China, Hefei, 230026-Anhui, P.R. China
   1 ENEA, Laboratorio Dati Nucleari, Bologna, Italy
   1 EARTH AND SPACE SCIENCES DIV., JET PROPULSION LAB., CALIFORNIA INST. OF TECH., PAS
   1 E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, DC 20375, USA
   1 Dwingeloo, Radiosterrewacht, Netherlands
   1 Dwingeloo Radiosterrenwacht, Netherlands
   1 Dwingeloo Radiosterrenwacht, Dwingeloo, Netherlands
   1 Dwingeloo Radio Observatory, Dwingeloo, Netherlands
   1 Dublin Institute of Advanced Studies, Republic of Ireland
   1 Dublin Institute for Advanced Studies, Dublin, Ireland, UK
   1 Du Pont de Nemours and Co., Central Research and Development Dept., Wilmington, DE
   1 Dr.-Remeis-Sternwarte, Universitat Erlangen-Nurnberg, Sternwartstrasse 7, D-96049 Bamberg, Germany
   1 Dpto. Fisica Teorica, C--XI, Facultad de Ciencias, Universidad Autonoma de Madrid, Cantoblanco, E--28049 Madrid, Spain
   1 Dp. di Fisica dell'Universita, Perugia, Italy
   1 Dominion Radio Astrophysical Observatory, P. O. Box 248, Penticton, BC, Canada V2A 6K3, Canada
   1 Dominion Astrophysical Observatory, Victoria, British Columbia, Canada, Observatorio Interamericano de Cerro Tololo, La Serena, Chile
   1 Dominion Astrophysical Observatory, National Research Council of Canada, Victoria, V8X 4M6 Canada
   1 Dominion Astrophysical Observatory, National Research Council of Canada, Victoria, Canada
   1 Dominion Astrophysical Observatory, National Research Council of Canada, 5071 W. Saanich Road, Victoria, BC V8X 4M6, Canada
   1 Dominion Astrophysical Observatory, NRC, 5071 West Saanich Road, Victoria, BC, V8X 4M6, Canada
   1 Dominion Astrophysical Observatory, 5071 W. Saanich Road, Victoria, BC, V8X 4M6, Canada
   1 Dominion Astrophysical Observatory, 5071 W. Saanich Road, RR 5, Victoria, BC, V8X 4M6, Canada
   1 Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, CA 91125, USA
   1 Divisao de Astrofisica, Instituto Nacional de Pesquisas Espaciais, C.P. 515, Sao Jose dos Campos-SP, 12201-970, Brazil
   1 Diprtimento di Fisica dell'Univ. di Firenze, Firenze, Italy
   1 Dipartimento di Statistica dell'Univ. di Padova, Padova, Italy
   1 Dipartimento di Fisica, Universita' di Tor Vergata, Roma, Italy
   1 Dipartimento di Fisica, Universita di Roma, via Laneisi 29, 00100 Roma, Italy
   1 Dipartimento di Fisica, Universita di Roma `La Sapienza', P.le Aldo Moro, I-00185 Roma, Italy
   1 Dipartimento di Fisica, Universita di Pisa, Piazza Torricelli 2, Pisa, I-56100, Italy
   1 Dipartimento di Fisica, Universita di Pisa, Piazza Torricelli 2, I-56100 Pisa, Italy
   1 Dipartimento di Fisica, Universita di Pisa, Piazza Torricelli 2, 56126 Pisa, Italy, marcella@astr1pi.difi.unipi.it
   1 Dipartimento di Fisica, Universita di Pisa, Piazza Torricelli 2, 56126 Pisa, Italy and Osservatorio Astronomico Collurania, 64100 Teramo, Italy and Laboratori del Gran Sasso, INFN, 67100 L'Aquila, Italy, vittorio@astr1pi.difi.unipi.it
   1 Dipartimento di Fisica, Universita di Perugia, via A. Pascoli, I-06100 Perugia, Italy
   1 Dipartimento di Fisica, Universita di Ferrara, Via Paradiso, 12, 44100 Ferrara, Italy
   1 Dipartimento di Fisica, Universita di Ferrara, Via Paradiso, 11, 44100 Ferrara, Italy
   1 Dipartimento di Fisica, Universita della Calabria, I-97036 Arcavata di Rende, Cosenza, Italy
   1 Dipartimento di Fisica, Universita Roma 3, Via Vasca Navale 84, 00146 Roma, Italy
   1 Dipartimento di Fisica, Il Universita di Roma `Tor Vergata', Via della Ricerca Scientifica 1, 00133 Roma, Italy
   1 Dipartimento di Fisica, II Universita di Roma, via E. Carnevale, I-00173 Roma, Italy
   1 Dipartimento di Fisica dell'Universita di Ferrara, via Paradiso 12, I-44100 Ferrara, Italy and Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara, via Paradiso 12, I-44100 Ferrara, Italy
   1 Dipartimento di Fisica Galileo Galilei, Univsita di Padova, via Marzolo 8, I-35131 Padova, Italy
   1 Dipartimento di Fisica G. Galilei, Universita di Padova, via Marzolo 8, I-35131 Padova, Italy
   1 Dipartimento di Fisica Augusto Righi, Universita di Bologna, via Irnerio 46, I-40126 Bologna, Italy
   1 Dipartimento di Astronomia, Vicolo dell'Osservatorio, Padova, Italy
   1 Dipartimento di Astronomia, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy
   1 Dipartimento di Astronomia, Universita' di Padova, vicolo dell'Osservatorio 5, I-35122, Padova, Italy
   1 Dipartimento di Astronomia, Universita di Trieste, via Beirut 2-4, I-34013 Trieste, Italy
   1 Dipartimento di Astronomia, Universita di Padova, vicolo dell'Osservatorio, 5, I-35122 Padova, Italy
   1 Dipartimento di Astronomia, Universita di Padova, vicolo dell'Osservatorio 5, I-35122, Italy
   1 Dipartimento di Astronomia, Universita di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy
   1 Dipartimento di Astronomia, Universita di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy and International School for Advanced Studies (SISSA), via Beirut 2-4, 34013 Trieste, Italy
   1 Dipartimento di Astronomia, Universita di Padova, I 35122 Padova, Italy
   1 Dipartimento di Astronomia, Universita di Firenze, Largo E. Fermi 5, I-50125 Firenze, Italy
   1 Dipartimento di Astronomia, Universita di Bologna, Via Zamboni, 33, 40126 Bologna, Italy
   1 Dipartimento di Astronomia, Universita di Bologna, 140100 Bologna, Italy
   1 Dipartimento di Astronomia, Universita degli Studi, Bologna, Via Zamboni 33, I-40126 Bologna, Italy
   1 Dipartimento di Astronomia, Universita degli Studi di Bologna, Via Zamboni 33, I-40126 Bologna, Italy
   1 Dipartimento di Astronomia e Scienze dello Spazio, Florence, Italy
   1 Dipartimento di Astronomia e Scienza dello Spazio, Universita di Firenze, Largo E. Fermi, 5, 50125 Firenze, Italy
   1 Dipartimento di Astronomia e Scienza dello Spazio, Universita di Firenze, L.go E.\ Fermi 5, I-50125 Firenze, Italy
   1 Dipartimento di Astronomia dell'Universita, Florence, Italy
   1 Dipartimento di Astronomia dell'Universita, 35122 Padova, Italy
   1 Dipartimento di Astronomia dell'Universita di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy
   1 Dipartimento di Astronomia dell'Univ., Trieste, Italy
   1 Dipartimento di Astronomia dell'Univ. di Padova, Padova, Italy
   1 Dipartimento Ambiente della Regione Toscana, Firenze, Italy
   1 Digital Systems Group, Inc., Warminster, PA
   1 Deutsches Institut fuer medizinische Dokumentation und Information, Cologne, Federal Republic of Germany
   1 Deutsches Geodaetisches Forschungsinstitut, Munich, Federal Republic of Germany
   1 Deutsches Elektronen-Synchrotron, Hamburg, Federal Republic of Germany
   1 Deutsche Forschungs- und Versuchsanstalt fuer Luft- und Raumfahrt, Institut fuer Optoelektronik, Wessling, West Germany
   1 Deutsche Forschungs- und Versuchsanstalt fuer Luft- und Raumfahrt, Goettingen, West Germany
   1 Deutsche Akademie der Wissenschaften, Zentralinstitut fuer Astrophysik, Tautenburg, East Germany
   1 Deutsche Akademie der Wissenschaften, Heinrich-Hertz-Institut fuer Atmosphaerenforschung und Geomagnetismus, Berlin, East Germany
   1 Deutsche Akademie der Wissenschaften der DDR, Zentralinstitut fuer Astrophysik, Potsdam, East Germany
   1 Deutsche Agentur fuer Raumfahrtangelegenheiten GmbH, Bonn, Federal Republic of Germany
   1 Depto. Fisica Teorica C-XI, Universidad Autonoma de Madrid, E-28049 Madrid, Spain
   1 Depto Fisica, UFSC, Campus Trindade, Florianopolis, 88040-900, Brazil
   1 Dept. of Physics, Univ. of Trieste -- via A. Valerio 2, I-34127 Trieste, Italy
   1 Dept. of Physics, Univ. of Oxford, Keble Rd., Oxford OX1 3RH
   1 Dept. of Physics, Univ. of Durham, South Road, Durham DH1 3LE. E-mail: M.J.Hudson@durham.ac.uk
   1 Dept. of Physics, Southampton University, Southampton SO17 1BJ
   1 Dept. of Physics, Keble Road, Oxford, England, UK
   1 Dept. of Physics, Carnegie Mellon University, Pittsburgh, PA 15217, USA
   1 Dept. of Earth and Space Science, Faculty of Science, Osaka Univ., Toyonaka, Osaka 560, Japan
   1 Departments of Astronomy and Physics, University of California, Berkeley, CA 94720, USA
   1 Departmento de Astronomia, Universidad de Valencia, 46100 Burjassot, Spain
   1 Department of the Environment, Hydraulics Research Station, Wallingford, Oxon, England
   1 Department of the Environment, Canadian Climate Centre, Downsview, Ontario, Canada
   1 Department of Theoretical Physics, Oxford
   1 Department of Theoretical Physics, Charles University, Prague, Czech Republic
   1 Department of Supply, Australian Defence Scientific Service, Salisbury, Australia
   1 Department of Statistics, Rand Afrikaans University, PO Box 524, Johannesburg 2000, South Africa
   1 Department of Statistics, Pennsylvania State University, State College, PA 16802, USA
   1 Department of Space Physics and Astronomy, Rice University, Houston, TX 77051, USA
   1 Department of Pure & Applied Physics, Queen's University of Belfast, Belfast BT7 1NN
   1 Department of Physics, Weizmann Institute, Rehovot 76100, Israel
   1 Department of Physics, Victoria University of Wellington, Wellington, New Zealand
   1 Department of Physics, Utkal University, Bhubaneswar 751104, India
   1 Department of Physics, University of Wollongong, Wollongong NSW 2522, Australia
   1 Department of Physics, University of Wollongong, NSW 2522, Australia
   1 Department of Physics, University of Wisconsin-Madison, Madison, WI 53706, U.S.A
   1 Department of Physics, University of Western Sydney, Nepean, PO Box 10, Kingswood, NSW, 2747, Australia
   1 Department of Physics, University of Victoria, Victoria, BC, Canada
   1 Department of Physics, University of Venda, Private Bag X5050, Thohoyandou, South Africa
   1 Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan 113
   1 Department of Physics, University of Sheffield, The Hicks Building, Sheffield S3 7RH, UK
   1 Department of Physics, University of Oxford, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH
   1 Department of Physics, University of Oxford, Keble Road, Oxford, UK
   1 Department of Physics, University of Oregon, Eugene, Oregon 97403, USA
   1 Department of Physics, University of Nevada at Las Vegas, 4505 Maryland Parkway, Las Vegas, NV 89154, USA
   1 Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
   1 Department of Physics, University of Hong Kong, Pokfulam, Hong Kong
   1 Department of Physics, University of Haifa at Oranim, Oranim, Tivon 36006, Israel
   1 Department of Physics, University of Florida, Gainesville, FL 32611, USA
   1 Department of Physics, University of California, Riverside, CA 92521, USA
   1 Department of Physics, University of California, Berkeley, CA 94720, USA
   1 Department of Physics, University of Bristol, Royal Fort, Tyndall Avenue, Bristol BS8 1TL
   1 Department of Physics, University of Alabama in Huntsville, Huntsville, AL 35899, USA
   1 Department of Physics, UMIST, P. O. Box 88, Manchester, M60 1QD, UK
   1 Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-03, Japan
   1 Department of Physics, The University of Hong Kong, Hong Kong
   1 Department of Physics, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK
   1 Department of Physics, The Open University, Walton Hall, Milton Keynes MK7 6A, UK
   1 Department of Physics, The Citadel, 171 Moultrie Street, Charleston, SC 29409, USA
   1 Department of Physics, Technion-Israel Institute of Technology, 32000 Haifa, Israel
   1 Department of Physics, Sun Moon University, Tangjeongmyeon, Asankun, Chung-nam, Republic of Korea, 337-840
   1 Department of Physics, Stanford University, Stanford, CA 94305-4060, USA
   1 Department of Physics, Soweto Campus, Vista University, P Bag X09, 2013 Bertsham, Johannesburg, South Africa
   1 Department of Physics, Queen Mary andWestfield College, Mile End Road, London, E1 4NS
   1 Department of Physics, Queen Mary and Westfield College, Mile End Road, London E1 4NS, UK
   1 Department of Physics, Queen Mary and Westfield College, Mile End Road, London E1 4NS
   1 Department of Physics, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH
   1 Department of Physics, Nuclear Physics Laboratory, University of Oxford, Keble Road, Oxford OX1 3RH, UK
   1 Department of Physics, New Jersey Institute of Technology, Newark, NJ 07102, USA
   1 Department of Physics, Nagoya University Furo-cho, Chikusa-ku, Nagoya 464-01, Japan
   1 Department of Physics, Monash University, Clayton, Victoria, 3168 Australia
   1 Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
   1 Department of Physics, Lafayette College, Easton, PA 18042, USA
   1 Department of Physics, Korea Advanced Institute of Science and Technology, Taejon 305-701, South Korea
   1 Department of Physics, Indian Institute of Science, Bangalore 560012, India
   1 Department of Physics, Imperial College of Science, Technology & Medicine, Prince Consort Road, London SW7 2BZ, UK
   1 Department of Physics, Ibaraki University, Mito, Japan
   1 Department of Physics, Hokkaido University, Sapporo 060, Japan
   1 Department of Physics, Hokkaido University, Kita 10 Nishi 8, Sapporo 060, Japan
   1 Department of Physics, Hicks Building, University of Sheffield, Sheffield S3 7RH, UK
   1 Department of Physics, Faculty of Science, Kyushu University, Fukuoka 810, Japan
   1 Department of Physics, Faculty of Business & Technology, University of Western Sydney, Macarthur, PO Box 555, Campbelltown, NSW 2560, Australia
   1 Department of Physics, Faculty of Business & Technology, University of Western Sydney Macarthur, PO Box 555, Campbelltown, NSW 2560, Australia
   1 Department of Physics, Columbia University, 538 West 120 Street, New York, NY 10027, UK
   1 Department of Physics, Brown University, Providence, RI 02912, USA
   1 Department of Physics, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece
   1 Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
   1 Department of Physics, 34459 University, Vezneciler, Istanbul, Turkey
   1 Department of Physics and Space Sciences, Florida Institute of Technology, 150 W. University Blvd, Melbourne, FL 32901, USA
   1 Department of Physics and Enrico Fermi Institute, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USA
   1 Department of Physics and Center for Theoretical Studies of Physical Systems, Clark Atlanta University, Atlanta, GA 30314, USA
   1 Department of Physics and Center for Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
   1 Department of Physics and Center for Space Research 37-241, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
   1 Department of Physics and Center for Space Research 37-241, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge MA 02139, USA
   1 Department of Physics and Astronomy, York University, North York, Ontario, M3J 1P3, Canada
   1 Department of Physics and Astronomy, York University, 4700 Keele Street, Toronto, Ontario, M3J 1P3, Canada
   1 Department of Physics and Astronomy, York University, 4700 Keele Street, North York, Ontario M3J 1P3, Canada
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   1 Department of Physics and Astronomy, University of Wyoming, University Station, Laramie, WY 82071, USA
   1 Department of Physics and Astronomy, University of Western Ontario, London, Ontario, Canada N6A 3K7
   1 Department of Physics and Astronomy, University of Wales, PO Box 913, Cardiff CF2 3YE, UK
   1 Department of Physics and Astronomy, University of Wales, College of Cardiff, PO Box 913, Cardiff CF2 3YB, UK
   1 Department of Physics and Astronomy, University of Wales Cardiff, PO Box 913, Newport Road, Cardiff CF1 3TH, UK
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   1 Department of Physics and Astronomy, University of Victoria, Box 3055, Victoria, BC, V8W 3P6 Canada
   1 Department of Physics and Astronomy, University of Toledo, Toledo, OH 43606, USA
   1 Department of Physics and Astronomy, University of Texas at Austin, TX, USA
   1 Department of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews KY16 9SS, UK
   1 Department of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS, UK
   1 Department of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS
   1 Department of Physics and Astronomy, University of St Andrews, Fife KY16 9SS
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   1 Department of Physics and Astronomy, University of Nigeria, Nsukka, Nigeria
   1 Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131, USA
   1 Department of Physics and Astronomy, University of Nebraska, Lincoln, NE 68588-0111, USA
   1 Department of Physics and Astronomy, University of Missouri-St. Louis, 8001 Natural Bridge Road, St Louis, Missouri, USA
   1 Department of Physics and Astronomy, University of Missouri-St Louis, 8001 Natural Bridge Road, St Louis, Missouri, USA
   1 Department of Physics and Astronomy, University of Massachusetts at Amherst, Amherst, MA, USA
   1 Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA
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   1 Department of Physics and Astronomy, University of Kansas, USA
   1 Department of Physics and Astronomy, University of Iowa, 203 Van Allen Hall, Iowa City, IA 52242, USA
   1 Department of Physics and Astronomy, University of Georgia, Athens, GA 30602-2451, USA
   1 Department of Physics and Astronomy, University of Central Lancashire, Preston, Lancashire PR1 2HE
   1 Department of Physics and Astronomy, University of Calgary, Calgary, Alberta, Canada T2N 1N4
   1 Department of Physics and Astronomy, University of Calgary, Calgary, AB, Canada T2N 1N4
   1 Department of Physics and Astronomy, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
   1 Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
   1 Department of Physics and Astronomy, University of Alabama, Tuscaloosa, AL 35487-0324, USA
   1 Department of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester M13 9PL
   1 Department of Physics and Astronomy, The University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
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   1 Department of Astronomy, The Ohio State University, Columbus, OH 43210, USA
   1 Department of Astronomy, The Ohio State University, Columbus, OH 43210, U.S.A. Internet: zhang@payne.mps.ohio-state.edu
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   1 Department de Physique, University de Montreal, CP 6128, Succursale Centre-ville, Montreal, H3C 3J7, Quebec, Canada
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   1 Departement de Physique, Universite de Montreal, and Observatoire du mont Megantic, CP 6128, Centre-ville, Montreal, QC H3C 3J7, Canada
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   1 Demoncritus Univ. of Thrace, Xanthi, Greece
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   1 DLR Institut fur Planetenerkundung, Rudower Chaussee 5, D-12489 Berlin, Germany
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   1 DEPT. OF ASTRONOMY, UNIV. OF CHILE, CASILLA 36-D, SANTIAGO, CHILE
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   1 DASOP, Observatoire de Paris, Section Meudon, F-92195 Meudon Principal Cedex, France
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   1 Czechoslovak Academy of Sciences, Inst. of Astronomy, Ondrejov, Czechoslovakia
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   1 Czech Academy of Sciences, Astronomical Inst., Prague, Czech Republic
   1 Curtin University of Technology, Western Australia, Australia
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   1 Cornell-Sydney University Astronomy Center, Sydney, Australia
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   1 Copernicus Astronomical Center, Bartycka 18, 00-716 Warszawa, Poland
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   1 Copenhagen University, Observatory, Copenhagen, Denmark
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   1 Commissariat a l'Energie Atomique, Centre d'Etudes de Limeil, Villeneuve-St-Georges, Val-de-Marne, France
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   1 Comenius University, Bratislava, Slovak Republic
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   1 Coburg, Fachhochschule, Muenchberg, Federal Republic of Germany
   1 Clark Lake Radio Observatory, Borrego Springs, MD
   1 City College of New York, New York, NY, US
   1 Chungnam National University, Taejon, Republic of Korea
   1 Chungnam National Univ., Yusong-ku, Korea
   1 Chungnam National Univ., Taejon, Republic of Korea
   1 Chungnam National Univ., Daejeon, South Korea
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   1 Christian-Albrechts Univ. zu Kiel, Kiel, Germany
   1 Chinese Center of Advanced Science and Technology, Beijing, People's Republic of China
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   1 Chinese Academy of Sciences, Physics Institute, Beijing, People's Republic of China
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   1 Chilbolton Observatory, Chilbolton, Hants., England
   1 Chicago, University, Chicago, Fermi National Accelerator Laboratory, Batavia, IL
   1 Chemistry Department, University of Nottingham, University Park, Nottingham NG7 2RD, UK
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   1 Chatterton Astronomy Department, School of Physics, University of Sydney, Sydney 2006, Australia
   1 Charles University Prague Svedska, Prague, Czech Republic
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   1 Changnam National Univ., Daejeon, South Korea
   1 Chalmers Univ. of Technology, Onsala, Sweden
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   1 Cerro Tololo Interamerican Observatory, National Optical Astronomy Observatories, PO Box 26732, Tucson, AZ 85726, USA*
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   1 Centro de Fisica, Instituto Venezolano de Investigaciones Cientificas (IVIC), PO Box 21827, Caracas 1020A, Venezuela
   1 Centro de Fisica da Materia Condensada, Lisbon, Portugal
   1 Centro de Electrodinamica, Instituto Superior Tecnico, 1096 Lisboa Codex, Portugal
   1 Centro de Astrofisica, Unversidade do Porto, Rua do Campo Alegre, 823, 4150 Porto, Portugal
   1 Centro Interuniversitario Regionale di Astrofisica e Cosmologia, Trieste, Italy
   1 Centro Interuniversitario Regionale di Astrofisica e Cosmologia, Italy
   1 Centro Interuniversitario Regionale di Astrofisica e Cosmologia
   1 Centro Astronomico Hispano Aleman, Spain
   1 Centro Astronomico Hispano Aleman, Almeria, Spain
   1 Centre-d'Etudes et de Recherches de la Machine-Outil, Saint-Martin-d'Heres, France
   1 Centre for Information Science Research
   1 Centre for Astrophysics, University of Central Lancashire, Preston PR1 2HE, UK
   1 Centre for Advanced Research in Space Optics, Trieste, Italy
   1 Centre for Advanced Research in Space Optics, Italy
   1 Centre de Recherche en Calcul Applique, Montreal, Quebec, Canada
   1 Centre de Recherche en Calcul Applique, Canada
   1 Centre de Recherche en Astronomie Astrophysique, Alger, Algeria
   1 Centre de Physique Theorique, Ecole Polytechnique, 91128 Palaiseau Cedex, France
   1 Centre de Physique Theorique - CNRS, Luminy Case 907, 13288 Marseille CEDEX 9, France
   1 Centre de Physique Theorique - C.N.R.S., Marseille, France
   1 Centre d'Etudes et de Recherches de la Machine-Outil, Saint-Martin d'Heres, France
   1 Centre d'Etudes et de Recherches de la Machine-Outil, Sa
   1 Centre d'Etudes et de Recherches de la Machine-Outil
   1 Centre d'Etudes et de Recherches Geodynamiques et Astronomiques
   1 Centre d'Etudes de Bruyeres-le-Chatel, Service de Physique Neutronique et Nucleaire, Montrouge, Hauts-de-Seine, France
   1 Centre d'Etude de l'Energie Nucleaire, Saclay, France
   1 Centre d'Estudis Avancats de Blanes, Gironq, Spain
   1 Centre d'Analyse des Images et DEMIRM, Observatoire de Paris, 61 avenue de l'Observatoire, F-75014 Paris, France and Institut d'Astrophysique, Universite de Liege, Avenue de Cointe 5, B-4000 Liege, Belgium
   1 Centre d'Analyse des Images CNRS/INSU/MAMA, Observatoire de Paris, France and Observatoire de Paris (DEMIRM)/URA 336 du CNRS, 77 Avenue Denfert-Rochereau, F-75014 Paris, France
   1 Centre Universitaire St.-Louis-Maillet, Edmundston, Canada
   1 Centre National de la Recherche, Agdal-Rabat, Morocco
   1 Centre National de la Recherche Scientifique, Verrieres, France
   1 Centre National de la Recherche Meteorologique, Toulouse, France
   1 Centre National d'Etudes Spatiales, Toulouse, France
   1 Centre National d'Etudes Spatiales, Laboratoire de Physique Stellaire et Planetaire, Verrieres-le-Buisson, Essonne, France
   1 Centre Interuniversitario Regionale per l'Astrofisica e la Cosmologia, Italy
   1 Central Michigan University, Mt. Pleasant, MI, US
   1 Central Michigan University, Mt. Pleasant, MI
   1 Center of Excellence in Information Systems at Tennessee State Univ.
   1 Center for Theoretical Physics and Mathematics, Teheran, Iran
   1 Center for Space Science, Fountain Valley, Calif.
   1 Center for Space Science and Astrophysics, HEPL, Stanford University, MC 4055, Stanford, CA 94305-4055, USA
   1 Center for Space Research, Massachusetts Institute of Technology, Massachusetts Avenue, Cambridge, MA 02139, USA
   1 Center for Scientific Computing, Espoo, Finland
   1 Center for Nonlinear Complex System, Yunnan Univ., Kunming, China
   1 Center for Interdisciplinary Studies, Krakow, Poland
   1 Center for Information Processing Education, Hokkaido University, Kita 10 Nishi 5, Sapporo 060, Japan
   1 Center for High Angular Resolution Astronomy, Georgia State University, Atlanta, GA 30303-3083, USA
   1 Center for EUV Astrophysics, 2150 Kittredge Street, University of California, Berkeley, CA94720-7450, USA
   1 Center for Astrophysics, University of Science and Technology of China, Hefei, 230026, Anhui, China
   1 Center for Astrophysics and Space Sciences, University of California, San Diego, La Jolla, CA 92093-0111, USA
   1 Center for Astrophysics and Space Sciences, University of California, San Diego, CASS 0111, La Jolla, CA 92093-0111, USA
   1 Center for Astrophysics and Space Sciences and Department of Physics, University of California, San Diego, La Jolla, California 92093-0424, USA
   1 Center for Astrophysics and Space Sciences and Department of Physics, University of California, San Diego, La Jolla, CA 92093-0111, USA
   1 Center for Astrophysics and Space Science, University of California at San Diego, La Jolla, CA 92093, USA
   1 Center for Astrophysics and Space Astronomy, University of Colorado, Campus Box 389, Boulder, CO 80309-0389, USA
   1 Center for Astronomical Adaptive Optics, 933 N Cherry Ave. Tucson, U.S.A., e-mail: gbrusa@as.arizona.edu
   1 Catonsville Community College, Catonsville, MD
   1 Catania, Universita, Catania, Osservatorio Astrofisico, Catania, Italy
   1 Case Western Reserve University, East Cleveland, OH
   1 Case Western Reserve University, Cleveland, Ohio
   1 Case Western Reserve University, Cleveland, OH, US
   1 Carshalton College of Further Education, Carshalton, Surrey, England
   1 Carnegie-Mellon University, Pittsburgh, PA
   1 Carnegie Southern Observatory, Las Campanas, Chile
   1 Carnegie Observatories, Las Campanas Observatory, Casilla 601, La Serena, Chile
   1 Carnegie Observatories, Casilla, La Serena, Chile
   1 Carnegie Observatories, 813 Santa Barbara St, Pasadena, CA 91101, USA. E-mail: jeffw@cetus.ociw.edu
   1 Carleton College, Department of Physics and Astronomy, Northfield, MN 55057, USA
   1 Canterbury, University, Christchuch, New Zealand
   1 Canadian Institute for Theoretical Astrophysics, University of Toronto, Ontario M5S 3H8, Canada
   1 Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St George St, Toronto, Ontario M5S 1A1, Canada
   1 Canadian Institute for Theoretical Astrophysics, McLennan Labs, University of Toronto, 60 St. George St., Toronto, Ontario, Canada M5S 1A7
   1 Canadian Institute for Theoretical Astrophysics, MacLennan Labs, 60 St. George Street, Toronto M5S 1A7, Ontario, Canada
   1 Canadian Institute for Theoretical Astrophysics, MacLennan Labs, 60 St George Street, Toronto M5S 1A7, Ontario, Canada
   1 Canadian Institute for Theoretical Astrophysics, MacLennan Laboratories, 60 George Street, Toronto M5S 1A7, Ontario, Canada
   1 Canadian Institute for Theoretical Astrophysics, 60 St. George Street, Toronto MS5 1A7, Canada
   1 Canadian Institute for Theoretical Astrophysics, 60 St George Street, Toronto, Ontario M5S 1A7, Canada
   1 Canadian Institute for Theoretical Astrophysics, 60 St George St, Toronto, Canada M5S 1A7
   1 Canadian Institute for Advanced Research Cosmology Program, Theoretical Physics Institute, University of Alberta, Edmonton, Canada TG6 2J1
   1 Canadian Forces Meteorological and Oceanographic Centre, Halifax, Canada
   1 Canadian Coast Guard College, Sydney, Nova Scotia, Canada
   1 Calvin College, Grand Rapids, Mich.
   1 Caltech Concurrent Supercomputing Facility, Pasadena, CA, US
   1 California, University, Santa Cruz and Livermore, Calif.
   1 California, University, Santa Cruz and Livermore
   1 California, University, Santa Barbara, and Berkeley, CA
   1 California, University, Livermore, Lawrence Livermore National Laboratory, CA
   1 California, University, Livermore and Los Angeles, CA
   1 California, University, Lawrence Livermore National Laboratory, Livermore
   1 California, University, Lawrence Livermore Laboratory, Livermore, Calif.
   1 California, University, Davis and Livermore, CA
   1 California Univ., Santa Barbara and Berkeley
   1 California Univ., Berkeley and Santa Barbara
   1 California Univ. San Diego, La Jolla, CA, US
   1 California State University at Dominguez Hills, Carson
   1 California State Univ. Northridge, Northridge, CA, US
   1 California Institute of Technology, Jet Propulsion Laboratory, Space Sciences Div., Pasadena, CA
   1 California Institute of Technology, Jet Propulsion Laboratory, Space Photography Section, Pasadena, Calif.
   1 California Institute of Technology, Jet Propulsion Laboratory, Planetary Atmospheres Section, Pasadena, Calif.
   1 California Institute of Technology, Jet Propulsion Laboratory, Molecular Physics and Chemistry Section
   1 California Institute of Technology, Jet Propulsion Laboratory, Image Processing Laboratory, Pasadena, CA
   1 California Institute of Technology, Jet Propulsion Laboratory, Earth and Space Sciences Div., Pasadena, CA
   1 California Institute of Technology, Jet Propulsion Laboratory and Dept. of Astronomy, Pasadena, Calif.
   1 California Institute of Technology, IPAC M/S 100, Pasadena, CA 91125, USA
   1 Calern-Caussols, Observatoire, Saint-Vallier-de-Thiey, France
   1 Calern-Caussols, Observatoire, Saint-Vallier-de-Thiey, Alpes-Maritimes, France
   1 Calern, Observatoire, Saint Vallier-de-Thiey
   1 Cagliari, Stazione Astronomica Internazionale di Latitudine, Cagliari, Italy
   1 Cabezon Observatory, Tenerife, Canary Islands, Spain
   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 Mathematics and Statistics, Canberra, Australia
   1 CSIRO, Div. of Chemical Physics, Clayton, Australia
   1 CSIRO, Div. of Building, Construction and Engineering, Highett, Australia
   1 CSIRO, Div. of Atmospheric Research, Mordialloc, Australia
   1 CSIRO Radiophysics Labs., Epping, NSW, Australia
   1 CSIC, Inst. de Astrofisica de Andalucia, Granada, Spain
   1 CSIC, Centre d'Estudis Avancats, Blanes, Spain
   1 CSIC Centre d'Estudis Avancats de Blanes, c/ Cami de St Barbara s/n, 17300 Blanes, Girona, Spain
   1 CREST, INSEE, timbre J340, 75675 Paris Cedex 14, France
   1 CRAL-Observatoire de Lyon (CNRS: UMR 142), F-69561 St-Genis-Laval Cedex, France
   1 CONICET, Programa de Fotometria y Estructura Galactica, Buenos Aires, Argentina
   1 CNRS, Unita de Ricerca di Asiago-Padova, Padua, Italy
   1 CNRS, Laboratoire de Physique, Moleculaire et d'Optique Atmospherique, Orsay, Essonne, France
   1 CNRS, Laboratoire de Physique et Chimie de l'Environnement, Orleans, France
   1 CNRS, Laboratoire de Physique Theorique, Paris
   1 CNRS, Laboratoire de Physique Stellaire et Planetaire, Verrieres-le-Buisson, Essonne, France. European Southern Observatory, Garching, West Germany
   1 CNRS, Laboratoire de Physique Atomique et Moleculaire et d'Instrumentation en Astrophysique
   1 CNRS, Laboratoire de Photophysique Moleculaire, Orsay, France
   1 CNRS, Laboratoire de Photophysique Moleculaire, Orsay, Essonne, France
   1 CNRS, Laboratoire de Photophysique Moleculaire, Orsay
   1 CNRS, Laboratoire de Meteorologie Dynamique, Palaiseau, Essonne, France
   1 CNRS, Laboratoire de Glaciologie et de Geophysique de l'Environnement, Saint-Martin-d'Heres, France
   1 CNRS, Laboratoire d'Astrophysique, Meudon, Hauts-de-Seine
   1 CNRS, Laboratoire d'Astrophysique Extragalactique et de Cosmologie
   1 CNRS, Laboratoire d'Annecy-le-Vieux de Physique des Particules, France
   1 CNRS, Laboratoire d'Annecy-le-Vieux de Physique des Particules
   1 CNRS, Laboratoire d'Annecy-le-Vieux de Physique des Particles, France
   1 CNRS, Laboratoire d'Aerothermique, Meudon, Hauts-de-Seine, France
   1 CNRS, Laboratoire ReneBernas, Orsay, Essonne, France
   1 CNRS, Laboratoire Rene Bernos, Orsay, Essonne, France
   1 CNRS, Laboratoire Rene Bernas, Orsay, Essonne, France
   1 CNRS, Institut National des Sciences de l'Univers, Saint-Maur-des-Fosses, France
   1 CNRS, Groupe de Recherche, Meudon, Hauts-de-Seine, France
   1 CNRS, Groupe d'Astrophysique, Saint-Martin-d'Heres, Isere, France
   1 CNRS, Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse, Orsay
   1 CNRS, Centre de Recherches en Physique de l'Environnement Terrestre et Planetaire, Orleans
   1 CNRS, Centre de Recherches en Physique de l'Environnement Terrestre et Plainetaire
   1 CNRS, Centre de Recherches Nucleaires de Strasbourg Cronenbourg, Strasbourg
   1 CNRS and CNET, Centre de Recherches en Physique de l'Environnement Terrestre et Planetaire, Orleans, France
   1 CNRS and CNET, Centre de Recherche en Physique de l'Environnement Terrestre et Planetaire, Orleans, France
   1 CNR, Unita di Ricerca di Padova-Asiago, Padua
   1 CNR, Unita di Ricerca di Asiago-Padova, Italy
   1 CNR, Laboratorio per il Plasma nello Spazio, Frascati
   1 CNR, Laboratorio di Ricerca e Tecnologia per lo Studio del Plasma nello Spazio, Frascati, Italy
   1 CNR, Laboratorio di Cosmogeofisica, Turin
   1 CNR, Laboratoria di Cosmogeofisica, Turin, Italy
   1 CNR, Istituto per le Applicazioni del Calcolo, Rome, Italy
   1 CNR, Istituto per la Fisica dell'Atmosfera, Rome, Italy
   1 CNR, Istituto di Studio e Tecnologie sulle Radiazzioni Estraterrestri, Bologna
   1 CNR, Istituto di Studio e Tecnologie sulle Radiazioni Extraterrestri
   1 CNR, Istituto di Studio e Tecnologie sulle Radiazioni Estraterrestri, Italy
   1 CNR, Istituto di Studio e Tecnologia sulle Radiazioni Extraterrestri, Italy
   1 CNR, Istituto di Ricerca sulle Onde Ellettromagnetiche, Florence, Italy
   1 CNR, Istituto di Fisica della Atmosfera, Rome, Italy
   1 CNR, Istituto di Fisica Spazio Interplanetario, Frascati
   1 CNR, Istituto di Fisica Cosmica ed Informatica, Palermo, Italy
   1 CNR, Istituto di Fisica Cosmica ed Applicazioni all'Informatica, Palermo, Italy
   1 CNR, Istituto di Fisica Cosmica e Applicazioni dell'Informatica, Palermo
   1 CNR, Istituto di Fisica Cosmica e Applicazioni dell' Informatica, Palermo, Italy
   1 CNR, Istituto di Fisica Cosmica con Applicazioni all'Informatica, Palermo
   1 CNR, Istituto di Elettronica dello Stato Solido, Rome, Italy
   1 CNR, Istituto di Elettronica Quantistica, Florence, Italy
   1 CNR, Istituto di Astrofisica Spaziale, Frascati, Roma II, Universita, Rome, Italy
   1 CNR, Istituto di Astrofisica Spaziale and Istituto per il Plasma nello Spazio, Frascati, Italy
   1 CNR, Ist. per le Applicazioni del Calcolo, Rome, Italy
   1 CNR, Ist. per le Applicazioni Interdisciplinari della Fisica, Palermo, Italy
   1 CNR, Ist. di Studio e Tecnologie sulle Radiazioni Extraterrestri, Bologna
   1 CNR, Ist. di Studio e Tecnologie sulle Radiazioni Extraterrestri
   1 CNR, Ist. di Studio e Tecnologie delle Radiazioni Extraterrestri, Bologna
   1 CNR, Ist. di Fisica dell'Atmosfera, Rome, Italy
   1 CNR, Ist. di Fisica Cosmica ed Applicazioni dell'Informatica, Palermo, Italy
   1 CNR, Ist. di Fisica Cosmica ed Applicazioni all'Informatica, Palermo, Italy
   1 CNR, Ist. di Fisica Cosmica con Applicazioni all'Informatica, Italy
   1 CNR, Gruppo Nazionale per l'Astronomia, Rome, Italy
   1 CNR, Gruppo Nazionale per l'Astronomia, Naples, Italy
   1 CNR, Gruppo Nazionale per l'Astronomia, Italy
   1 CNR, Gruppo Nazionale di Struttura della Materia, Florence, Italy
   1 CNR, Gruppi Italiani di Fisica Cosmica, Palermo, Italy
   1 CNR, Centro per l'Astronomica Infrarossa e lo Studio del Mezzo Interstellare, Florence, Italy
   1 CNR, Centro per l'Astronomia Infrarossa e lo Studio del Mezzo Interstellare, Arcetri, Italy
   1 CNR, Centro per l'Astronomia Infrarossa e lo Studio del Mezzo Interstelare, Florence, Italy
   1 CNR, Centro per l'Astronomia Infrarossa e Ro Studio del Mezza Interstellare, Florence, Italy
   1 CNR, Centro Nazionale Universitario di Calcolo Elettronico, Pisa, Italy
   1 CNR - Istituto di Fisica Cosmica ed Applicazioni dell'Informatica, Via Mariano Stabile 172, 90139 Palermo, Italy
   1 CNR - Istituto di Fisica Cosmica ed Applicazioni Informatica, Via Mariano Stabile 172, 90139 Palermo, Italy
   1 CNR - Istituto di Astrofisica Spaziale, Via E. Fermi 21, 00044 Frascati, Italy
   1 CNPq, Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil
   1 CNET, Centre de Recherches en Physique de l'Environnement Terrestre et Planetaire, Issy-les-Moulineaux, Hauts-de-Seine, France
   1 CNES, Groupe de Recherches de Geodesie Spatiale, Toulouse, France
   1 CNES, Groupe de Recherche de Geodesie Spatiale, Toulouse, France
   1 CNCPRST, Lab. d'Astronomie et de Geophysique, Rabat, Morocco
   1 CITA, University of Toronto, 60 Saint George Street, Toronto, Ontario M5S 1A1, Canada
   1 CITA, 60 St George Street, Toronto, Ontario M5S 1A7, Canada
   1 CITA, 60 St George Street, Toronto, ON M5S 3H8, Canada
   1 CISAS, vicolo dell'Osservatorio 5, I--35122 Padova, Italy, e-mail: marchetti@astrpd.pd.astro.it
   1 CGRO Science Support Center, Code 668.1, NASA/Goddard Space Flight Center, Greenbelt, MD 20771 USA
   1 CENTER FOR METEOROLOGY & PHYSICAL OCEANOGRAPHY, MASS
   1 CENTER FOR EARTH & PLANETARY PHYSICS, HARVARD UNIV., CAMBRIDGE, MA 02139
   1 CEA/DAPNIA/Astrophysique, Centre d'Etudes de Saclay, F-91191 Gif-sur-Yvette Cedex, France
   1 CEA, Villeneuve-Saint-Georges, France
   1 CEA, Service de Physique et Techniques Nucleaires, Bruyeres-le-Chatel
   1 CEA, Laboratoire d'Electronique et de Technologie de l'Informatique, Grenoble, France
   1 CEA, Centre d'Etudes de Vaujours-Moronvilliers, Courtry, France
   1 CEA, Centre d'Etudes de Limeil-Valenton, Villeneuve-St.-Georges, France
   1 CEA, Centre d'Etudes de Limeil, Villeneuve-Saint-Georges, France
   1 CEA, Centre d'Etude de Bruyeres-le-Chatel, France
   1 CE Limeil Valenton, Villeneuve St. Geo., France
   1 CCAT (World Laboratory), PO Box 8730 Beijing 100080 and Department of Geophysics, Peking University, Beijing 100871, China
   1 CASS, California Univ. San Diego, La Jolla, CA, US
   1 C.N.R., Gruppo Nazional Astronomia, Firenze, Italy
   1 C.N.R., C.A.I.S.M.I., Firenze, Italy
   1 C.N.C.P.R.S.T., B.P. Rabat, Morocco
   1 C.E. Saclay, Gif sur Yvette, France
   1 Busan National University, Busan, Republic of Korea
   1 Bundaberg, Astronomical Society, Queensland, Australia
   1 Bulgarian Academy of Sciences, Department of Astronomy, Sofia, Bulgaria
   1 Budapesti Muszaki Egyetem, Budapest, Hungary
   1 Brookhaven National Laboratory, Upton, New York, US
   1 Brockport State College, New York, N.Y.
   1 British Petroleum Co., PLC, Research Centre, Sunbury-on-Thames, England
   1 British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 0ET, UK
   1 British Aerospace Public, Ltd., Co., Aircraft Group, Warton, Lancs., England
   1 British Aerospace Australia, Ltd., Salisbury, Australia
   1 Boston University, Boston, Massachusetts, US
   1 Boston College, Chestnut Hills, Mass.
   1 Bosscha Observatory, Lembang, Java, Republic of Indonesia
   1 Bordeaux, Universite, Observatoire, Floriac, Gironde, France
   1 Bordeaux, Universite Observatoire, Floirac, Gironde, France
   1 Bordeaux, Observatoire de l'Universite, Floirac, France
   1 Bontekoe Data Consultancy, Herengracht 47, 2312 LC Leiden, the Netherlands
   1 Bomem, Inc., Vill de Vanier, Quebec, Canada
   1 Boeing Computer Services, Inc., Bellevue, Wash.
   1 Board of Studies in Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
   1 Board of Studies in Astronomy and Astrophysics, University of California at Santa Cruz, Santa Cruz, CA 95064, USA
   1 Blanes, Centre d'Estudis Avancats, Spain
   1 Blackett Laboratory, Imperial College of Science, Technology and Medicine, Prince Consort Road, London SW7 2BZ
   1 Blackett Laboratory, Imperial College of Science Technology and Medicine, Prince Consort Road, London SW7 2BZ, UK
   1 Biochemical Institute, Ahrensburg, Federal Republic of Germany
   1 Bhabha Atomic Research Centre, Nuclear Research Laboratory, Srinagar, India
   1 Bhabha Atomic Research Center, Nuclear Research Laboratory, Srinagar, India
   1 Berliner Arbeitsgemeinschaft fuer veraenderliche Sterne, Berlin, West Germany
   1 Berliner Arbeitsgemeinschaft fuer Veraenderliche Sterne, Witzenhausen, West Germany
   1 Berlin, Padagogische Hochschule, Berlin, West Germany
   1 Ben-Gurion Univ of Negev, Beer-Sheva, Israel
   1 Belogradchik Astronomical Observatory, 3900 Belogradchik, Bulgaria
   1 Bell-Northern Research, Ltd., Switching Div., Ottawa
   1 Beijing Univ. of Posts and Telecommunications, China
   1 Beijing Normal University, Beijing, Communist China
   1 Beijing Astronomical Observatory, Chinese Academy of Science, Beijing, China
   1 Battelle Pacific Northwest Laboratories, Richland, Wash.
   1 Ball Corp., Ball Aerospace Systems, Boulder, CO
   1 Ball Corp., Ball Aerospace Systems Div., Boulder, Colo.
   1 Ball Aerospace Systems, Boulder, CO, US
   1 Ball Aerospace Systems Group, Boulder, CO, US
   1 Ball Aerospace Systems Div., Western Laboratories, Boulder, CO
   1 Baja Observatory, Baja, Szegedi ut PO Box 766, H-6500 Hungary
   1 Baja California, Universidad Autonoma, Ensenada, Mexico
   1 BUREAU DES LONGITUDES, 77 AVENUE DENFERT, ROCHEREAU, F-75014, PARIS, FRANCE
   1 B. N. Mahavidyalaya, Hooghly, India
   1 B'lgarska Akademiia na Naukite, Samostoiatelna Sektsiia po Astronomiia, Sofia, Bulgaria
   1 B'lgarska Akademiia na Naukite, Samostoiatel'na Sektsiia Astronomiia
   1 B'lgarska Akademiia na Naukite, Institut za Iadreni Izsledvaniia i Iadrena Energetika, Sofia, Bulgaria
   1 Australian National Radioastronomy Observatory, Parkes, Australia
   1 Australian National Radio Astronomy Observatory, Parkes, Australia
   1 Australian Defence Science and Technology Organization, Electronics Research Laboratory, Salisbury, Australia
   1 Australian Defence Force Academy, Department of Physics, University of New South Wales, Canberra, ACT 2600, Australia
   1 Australia Telescope National Facility, PO Box 76, Epping, New South Wales 2121, Australia
   1 Australia Telescope National Facility, Locked Bag 194, Narrabri, NSW 2390, Australia
   1 Australia Telescope National Facility, CSIRO, P.O. Box 76, Epping, NSW 2121, Australia and University of Western Sydney Nepean, P.O. Box 10, Kingswood, NSW 2747, Australia, rhaynes@atnf.csiro.au
   1 Auckland, Astronomical Society, Auckland, New Zealand
   1 Atomic Energy Research Establishment, Nuclear Physics Div., Harwell, Oxon, England
   1 Atomic Energy Research Establishment, Electronics and Applied Physics Div., Harwell, Oxon, England
   1 Atomic Energy Organization, Center for Theoretical Physics and Mathematics, Tehran, Iran
   1 Atomic Energy Commission, Negev Nuclear Research Centre, Beersheba, Israel
   1 Atomic Energy Board, Pretoria, Republic of South Africa
   1 Atomic Energy Board, Physics Div., Pretoria, Republic of South Africa
   1 Atmospheric and Environmental Research, Inc., Cambridge, MA, US
   1 Athens, University, Astronomy Dept., Athens, Greece
   1 Athens, National and Capodistrian University, Greece
   1 Athens, National Technical University, Greece
   1 Athens, National Technical University, Athens, Greece
   1 Athens, National Capodistrian University, Zografos, Greece
   1 Athens, Academy, Research Centre for Astronomy and Applied Mathematics, Athens, Greece
   1 Athens, Academy, Research Center for Astronomy and Applied Mathematics, Greece
   1 Astrophysikalisches Onservatorium, Potsdam, Germany
   1 Astrophysikalisches Observatorium, Potsdam, Federal Republic of Germany
   1 Astrophysikalisches Institut und Univ-Sternwarte, Jena, Germany
   1 Astrophysikalisches Institut Potsdam, Observatorium fur solare Radioastronomie, Telegrafenberg A31, D-14473 Potsdam, Germany
   1 Astrophysikalisches Institut Potsdam, Braunschweig, Germany
   1 Astrophysikalisches Inst., Potsdam-Babelsberg, Germany
   1 Astrophysikalisches Inst. Postdam, Potsdam, Germany
   1 Astrophysics, School of Electrical Engineering, Electronics and Physics, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK
   1 Astrophysics, Physics Department, The University, Southampton SO17 1BJ, UK
   1 Astrophysics, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH
   1 Astrophysics, Nuclear Physics Building, University of Oxford, Keble Road, Oxford OX1 3RH, UK
   1 Astrophysics, Nuclear Physics Building, Keble Road, Oxford OX1 3RH
   1 Astrophysics, Chemical & Physical Sciences, Liverpool John Moores University, Liverpool L3 3AF
   1 Astrophysics group, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF
   1 Astrophysics Group, School of Physical and Chemical Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF
   1 Astrophysics Group, School of Engineering, Electronics & Physics, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF
   1 Astrophysics Group, School of Electrical Engineering, Electronics and Physics, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK
   1 Astrophysics Group, School of Chemical and Physical Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK
   1 Astrophysics Group, Liverpool John Moores University, Byrom St, Liverpool L3 3AF
   1 Astrophysics Group, Department of Physics, University of Bristol, Tyndall Avenue, Bristol BS8 1TL
   1 Astrophysics Group, Department of Mathematics, UMIST, PO Box 88, Manchester M60 1QD, UK
   1 Astrophysics Group, Department of Mathematics, UMIST, PO Box 88, Manchester M60 1QD
   1 Astrophysics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2BZ, UK
   1 Astrophysics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2BZ
   1 Astrophysics Divison, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX
   1 Astrophysics Division, Space Science Department, ESTEC, Postbus 299, NL-2200 AG Noordwijk, The Netherlands
   1 Astrophysics Division, Space Science Department of ESA, ESTEC, Postbus 299, 2200 AG Noordwijk, The Netherlands
   1 Astrophysics Division, Space Science Department of ESA, ESTEC, Noordwijk 2200AG, The Netherlands
   1 Astrophysics Division, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX
   1 Astrophysics Department, School of Physics, University of Sydney, NSW 2006, Australia
   1 Astrophysical Observatory of Arcetri, Largo Enrico Fermi 5, I-50125 Firenze, Italy
   1 Astrophysical Institute, Alma-Ata, Kazakhstan
   1 Astronomy department, University of Padua, Vicolo del Osservatorio 5, 35122 Padva, Italy
   1 Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, Mile End Road, London E1 4NS, UK and Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ, UK
   1 Astronomy Unit, School of Mathematical Sciences, Queen Mary & Westfield College, Mile End Road, London E1 4NS
   1 Astronomy Unit, Queen Mary and Westfield College, Mile End Road, London E1 4NS, UK
   1 Astronomy Program, Department of Earth and Space Sciences, SUNY at Stony Brook, Stony Brook, NY11794-2100, USA
   1 Astronomy Observatory of Padova, Padova, Italy
   1 Astronomy Group, University of Leicester, Leicester LE1 7RH
   1 Astronomy Group, Department of Physics, Queen's University,Kingston, Ontario, Canada K7L 3N6
   1 Astronomy Department, University of Padova, Vicolo dell Osservatorio 5, 35122, Padova, Italy
   1 Astronomy Department, University of Manchester, Manchester M13 9PL, UK
   1 Astronomy Department, University of Leicester, University Road, Leicester LE1 7RH
   1 Astronomy Department, University of Cape Town, Private Bag, 7700 Rondebosch, South Africa
   1 Astronomy Department, University of Cape Town, 7700 Rondebosch, South Africa
   1 Astronomy Department, University of California, Campbell Hall, Berkeley, CA 94720, USA
   1 Astronomy Department, University of California, Berkeley, CA, USA
   1 Astronomy Department, New Mexico State University, Las Cruces, NM 88001, USA
   1 Astronomy Department, New Mexico State University, Box 30001/Dept. 4500, Las Cruces, NM 88003-0001, USA
   1 Astronomy Department, New Mexico State University, Box 30001, Department 4500, Las Cruces, NM 88003-0001, USA
   1 Astronomy Department, MC 221, 1002 W. Green Street, University of Illinois, Urbana, IL 61801, USA
   1 Astronomy Department, FM-20, University of Washington, Seattle, WA 98195, USA
   1 Astronomy Department, 525 Davey Lab, Pennsylvania State University, State College, PA 16802, USA
   1 Astronomy Department, 105-24 California Institute of Technology, Pasadena 91125, USA
   1 Astronomy Centre, University of Central Lancashire, Preston PR1 2TQ, UK
   1 Astronomy Centre, School of Mathematics and Physical Sciences, University of Sussex, Falmer, Brighton BN1 9QH, UK
   1 Astronomy Centre, School of Mathematical and Physial Sciences, University of Sussex, Falmer, Brighton BN1 9QH, UK
   1 Astronomy Centre, MAPS, University of Sussex, Brighton BN1 9QH, UK
   1 Astronomy Centre, Department of Physical Sciences, University of Sussex, Falmer, Brighton BN1 9QH
   1 Astronomy & Astrophysics Centre, The University of Chicago, Chicago, IL 60637, USA
   1 Astronomy & Astrophysics Center, The University of Chicago, Chicago, Illinois 60637, USA
   1 Astronomy & Astrophysics Center, The University of Chicago, Chicago, IL 60637, USA
   1 Astronomiska observatoriet, Box 515, S--75120 Uppsala, Sweden and Institute for Planetary Exploration, DLR, Berlin, Germany
   1 Astronomiska observatoriet, Box 515, S--75120 Uppsala, Sweden and Astronomical Observatory, Box 14, FIN--00014 Helsinki, Finland
   1 Astronomishces Institut Wurzburg, Wurzburg, Germany
   1 Astronomisches Recheninstitut, Heidelberg, Federal Republic of Germany
   1 Astronomisches Rechen-Institut Monchhofstrabe, Heidelberg, Germany
   1 Astronomisches Rechen-Institut Heidelberg, Monchhofstrasse 12-14, 69120 Heidelberg, Germany
   1 Astronomisches Institut, Universitaet Basel
   1 Astronomisches Institut, Ruhr-Universitat Bochum, D-44780 Bochum, BRD
   1 Astronomisches Institut der Universitaet Munster, Munster, Germany
   1 Astronomisches Institut der Ruhr-Universitat, D--44780 Bochum, Germany and Dep. Astrofisica, Pontifica Universidad Catolica de Chile, Casilla 104, Santiago 22, Chile
   1 Astronomisches Institut der Ruhr-Universitat, D--44780 Bochum, Germany
   1 Astronomisches Institut Ruhr-Universitat Bochum, Universitatsstrasse 150, D-44801 Bochum, Germany
   1 Astronomische Institute der Universitat Bonn, Auf dem Hugel, Germany
   1 Astronomisch Institut 'Anton Pannekoek', Amsterdam, Netherlands
   1 Astronomie et Systemes Dynamiques, Paris, France
   1 Astronomicka Observator, Ondrejov, Czechoslovakia
   1 Astronomicheskaia Observatoriia, Odessa, Ukrainian, SSR
   1 Astronomicheska Observatoriia, Stara Zagora, Bulgaria
   1 Astronomical Observatory, Volgina 7, 11050 Belgrade, Yugoslavia
   1 Astronomical Observatory, Volgina 7, 11050 Belgrade, Serbia, Yugoslavia
   1 Astronomical Observatory, Vicolo Osservatorio 5, 35122, Padua, Italy
   1 Astronomical Observatory, Ural State University, Lenin Street 51, Ekaterinburg 620083, Russia
   1 Astronomical Observatory, Nanjing, People's Republic of China, Max-Planck-Institut fuer Radioastronomie, Bonn, West Germany
   1 Astronomical Observatory, Mount John, Lake Tekapo, New Zealand
   1 Astronomical Observatory, Jagiellonian University, Orla 171, 30-244 Cracow, Poland, Internet: pavel@oa.uj.edu.pl
   1 Astronomical Observatory of the Odessa State Univ., Odessa, Ukraine
   1 Astronomical Observatory of the Jagiellonian Univ., Krakow, Poland
   1 Astronomical Observatory of Trieste, Trieste, Italy
   1 Astronomical Observatory of Strasbourg, Strasbourg, France
   1 Astronomical Observatory of Padova, vicolo dell'Osservatorio 5, I-35122 Padova, Italy and CISAS, vicolo dell'Osservatorio 5, I-35122 Padova, Italy, ae-mail: ragazzoni@astrpd.pd.astro.it
   1 Astronomical Observatory of Padova, vicolo dell'Osservatorio 5, I-35122 Padova, Italy
   1 Astronomical Observatory of Padova, Padova, Italy
   1 Astronomical Observatory of Adam Mickiewicz University, Poznan, Poland
   1 Astronomical Latitude Observatory, Kornik, Poland
   1 Astronomical Institute, `Anton Pannekoek', University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
   1 Astronomical Institute, Wroclaw University, Kopernika 11, 51-622 Wroclaw, Poland
   1 Astronomical Institute, Utrecht University, Princetonplein 5, P.O. Box 80000, NL-3508 TA Utrecht, The Netherlands
   1 Astronomical Institute, Utrecht University, Postbus 80000, 3508 TA Utrecht, The Netherlands
   1 Astronomical Institute, Utrecht University, PO Box 80000, NL-3508 TA Utrecht, The Netherlands
   1 Astronomical Institute, University of Utrecht, Postbuss 80000, 3508 TA Utrecht, The Netherlands
   1 Astronomical Institute, University of Utrecht, Postbus 80000, 3508 TA Utrecht, The Netherlands
   1 Astronomical Institute, Tohoku University, Sendai, 980-77, Japan
   1 Astronomical Institute, Tohoku University, Aoba, Sendai 980-77, Japan
   1 Astronomical Institute, Postbox 80000, NL-3508 TA Utrecht, The Netherlands
   1 Astronomical Institute, Osaka Kyoiku University, Asahigaoka, Kashihara, 582, Japan
   1 Astronomical Institute, Ondrejov, Czech Republic
   1 Astronomical Institute, Faculty of Science, Tohoku University, Sendai, 980, Japan
   1 Astronomical Institute, Faculty of Science, Tohoku University, Sendai 980-77, Japan
   1 Astronomical Institute, Faculty of Science, Tohoku University, Sendai 980, Japan
   1 Astronomical Institute, Charles University, Svedska 8, CZ-150 00 Prague, Czech Republic
   1 Astronomical Institute, Charles University Prague, CZ-15000 Praha 5, Svedska 8, Czech Republic
   1 Astronomical Institute, Bohemia, Czech Republic
   1 Astronomical Institute, Academy of Sciences of the Czech Republic, 251 65 Ondrejov, Czech Republic, had@sunstel.asu.cas.cz)
   1 Astronomical Institute of the Wroclaw Univ., Wroclaw, Poland
   1 Astronomical Institute of Tokoku University, 980 Sendai, Japan
   1 Astronomical Institute ``Anton Pannekoek'', Kruislaan 403, NL 1098 SJ Amsterdam, The Netherlands
   1 Astronomical Institute `Anton Pannekoek', University of Amsterdam, and Center for High Energy Astrophysics, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
   1 Astronomical Institute `Anton Pannekoek' and Center for High-Energy Physics, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
   1 Astronomical Institute `Anton Pannekoek' and Center for High Energy Astrophysics, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
   1 Astronomical Institute Anton Pannekoek, University of Amsterdam, NIKHEF-H, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
   1 Astronomical Inst., Praha, Czech Republic
   1 Astronomical Inst. of the Academy of Sciences, Ondrejov, Czech Republic
   1 Astronomical Inst. of the Academy of Sciences, Czech Republic
   1 Astronomical Inst. of St. Petersburg State Univ., Russia
   1 Astronomical Inst. Ondrejov, Ondrejov, Czech Republic
   1 Astron. Obs. of University of Sofia, P.O. box 36, BG-1504 Sofia, Bulgaria
   1 Astrofizicheskaia Observatoriia, Tortu, Estonian SSR
   1 Astrofiscia Espacial y Fisica Fundamental, Madrid, Spain
   1 Astrochemistry Branch, Code 691, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA
   1 Astro Space Centre, P.N. Lebedev Physical Institute, Leninsky Prospekt 53, 117924, Moscow, Russia
   1 Astro Space Center of the P. N. Lebedev's Physical Institute, Moscow, Russia
   1 Armagh Observatory, University Observatory, St. Andrews, Scotland
   1 Armagh Observatory, Armagh, Northern Ireland, UK
   1 Armada, Real Instituto y Observatorio, San Fernando, Spain
   1 Argovian People's Observatory, Kuettingen, Switzerland
   1 Arecibo Observatory, PO Box 995, Arecibo, Puerto Rico 00613, USA
   1 Arecibo Observatory, PO Box 995, Arecibo, PR 00613, USA
   1 Area de Fisica Teorica, Grupo de Relatividad, Universidad de Salamanca, Salamanca, Spain
   1 Applied Research Corporation, Suite 1120, 8201 Corporate Dr., Landover MD 20785, U.S.A.
   1 Antwerpen, Universitaire Instelling, Antwerp, Belgium
   1 Antwerpen, Rijkuniversitair Centrum, Antwerp, Belgium
   1 Antwerpen, Rijksuniversitair Centrum, Antwerp
   1 Antarctic CRC, University of Tasmania, GPO Box 252C, Hobart, Tasmania, Australia 7001
   1 Anglo-Australian Observatory, PO Box 296, Epping, New South Wales, 2121, Australia
   1 Anglo-Australian Observatory, P.O. Box 296, Epping NSW 2121, Australia
   1 Anglo-Australian Observatory, Kensington, New South Wales, Australia
   1 Anglo-Australian Observatory, Epping Laboratory, PO Box 296, Epping, NSW, 2121, Australia
   1 Anglo-Australian Observatory, Epping Laboratory, PO Box 296, Epping, NSW 2121, Australia
   1 Anglo-Australian Observatory, Epping Laboratory, PO Box 296, Epping NSW 2121, Australia
   1 Anglo-Australian Observatory, Coonabarabran, Republic of South Africa
   1 Anglo-Australian Observatory, Coonabarabran, New South Wales, Australia
   1 Anglo-Australian Observatory, Coonabarabran, NSW 2357
   1 Anglo-Australian Observatory, Conabarabran, New South Wales 2357, Australia
   1 Anglo Australian Observatory, P.O.Box 296, Epping 2121 NSW, Australia and Australia Telescope National Facility, P.O.Box 76, Epping 2121 NSW, Australia
   1 Andalucia, Instituto de Astrofisica, Granada
   1 Andalucia, Instituto de Astrofisica, Apartado, Spain
   1 American University of Beirut (AUB), Department of Physics, Beirut, Lebanon
   1 American Science and Engineering, Inc., Cambridge
   1 American Science and Engineering, Inc., Cambrid
   1 American Science and Engineering, Cambridge, Mass.
   1 American Association of Variable Star Observers, Cambridge, MA, US
   1 American Association of Variable Star Observers (AAVSO), 25 Birch Street, Cambridge, MA02138, USA
   1 Allied-Signal Aerospace Co., Bendix Guidance Systems Div., Annapolis Junction, MD
   1 Allied-Signal Aerospace Co., Annapolis, MD
   1 Allegheny Observatory, Pittsburgh Univ., Pittsburgh, PA, US
   1 Alicante Univ., San Vicente Raspeig, Spain
   1 Alfred-Wegener-Inst. fuer Polar- und Meeresforschung, Bremerhaven, Germany
   1 Alcala de Henares, Universidad, Alcala de Henares, Spain
   1 Akademiia Nauk SSSR, Leningradskii Institut Iadernoi Fiziki, Gatchina, USSR
   1 Akademiia Nauk SSSR, Institut Teoreticheskoi Fiziki, Chernogolovka, USSR
   1 Akademiia Nauk SSSR, Institut Teoreticheskoi Astronomii, Leningrad, USSR
   1 Akademiia Nauk SSSR, Institut Prikladnoi Matematiki and Institut Kosmicheskikh Issledovanii, Moscow, USSR
   1 Akademiia Nauk Litovskoi SSR, Institut Fiziki i Matematiki, Vilnyus, Lithuanian SSR
   1 Akademiia Nauk Latviiskoi SSR, Institut Fiziki, Riga, Latvian SSR
   1 Akademiia Nauk Kazakhskoi SSR, Astrofizicheskii Institut, Alma-Ata, Kazakh SSR
   1 Akademiia Nauk Azerbaidzhanskoi SSR, Institut Fiziki, Baku, Azerbaidzhan SSR
   1 Akademie der Wissenschaften der DDR, Zentralinstitut fuer Kernforschung, Dresden, German Democratic Republic
   1 Akademie der Wissenschaften der DDR, Zentralinstitut fuer Astrophysik, Potsdam-Babelsberg, German Democratic Republic
   1 Akademie der Wissenschaften der DDR, Zentralinstitut fuer Astrophysik, Potsdam, East Germany
   1 Akademie der Wissenschaften der DDR, Institut fuer Raumforschung, Berlin, German Democratic Republic
   1 Akademie der Wissenschaften Sonnenfelsgasse, Vienna, Austria
   1 Aix-Marseille III, Univ., Marseille, France
   1 Agrivision Engineering, Inc., Davis, CA
   1 Agenzia Spaziale Italiana, Viale Regina Margherita 202, 00198 Roma, Italy
   1 Agency for the Assessment and Application of Technology, Jakarta, Indonesia
   1 Affiliated with the Space Science Division of ESA, Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
   1 Aeronautical Research Council, National Physical Laboratory, Teddington, Middx., England
   1 Aeronautical Research Associates of Princeton, Inc., Princeton, N.J.
   1 Adaptive Optics Associates, Inc., Cambridge, MA
   1 AdW der DDR, Zentralinstitut fuer Astrophysik, Sonneberg, German Democratic Republic
   1 AdW der DDR, Institut fuer Kosmosforschung, Berlin, German Democratic Republic
   1 Academy of Sciences, Institute of Physics and Technology, St. Petersburg, Russia
   1 Academy of Athens, Research Center for Astronomy and Applied Mathematics, Athens, Greece
   1 Academia Sinica, Theoretical Physics Institute, Peking, Communist China
   1 ATS Toronto Centre, Mississauga, Ontario, Canada
   1 ATNF/Paul Wild Observatory, Narrabri NSW, Australia
   1 ATMOSPHERIC AND ENVIRONMENTAL RESEARCH INC., 840 MEMORIAL DR., CAMBRIDGE, MA 02139
   1 ASTRONOMISKA OBSERVATORIET, UPPSALA, SWETED
   1 ASTRONOMISKA OBSERVATORIET, UPPSALA, SWEDEN
   1 ASTRONOMISKA OBSERVATORIET, BOX 515, 75120 UPPSALA, SWEDEN
   1 ASTRONOMISKA OBSERVATORIET, BOX 515, 751 20 UPPSALA, SWEDEN
   1 ASTRONOMISKA OBSERVATORIET, BOX 515, 721 20 UPPSALA, SWEDEN
   1 ASTRONOMICAL INST. OF THE CZECHOSLOVAK
   1 ARPEGES, Observatoire de Paris-Meudon, 5 place J. Janssen, 92195 Meudon, France, e-mail: jmmartin@obspm.fr
   1 ARPEGES, Observatoire de Paris, place J. Janssen, 92195 Meudon Principal Cedex, France
   1 APS Division, Department of Pure and Applied Physics, Queen's University, Belfast BT7 1NN
   1 AN USSR, Radioastronomicheskii Institut, Kharkov, Ukrainian SSR
   1 AN SSSR, Instiut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Troitsk, USSR
   1 AN SSSR, Institut Zemnogo Magnetizma, Ionosfery i Rasprostraveniia Radiovoln, Troitsk, USSR
   1 AN SSSR, Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Akademgorodok, USSR
   1 AN SSSR, Institut Fiziki, Baku, Azerbaidzhan SSR
   1 AN ESSR, Institut Astrofiziki i Fiziki Atmosfery, Toravere, Estonian SSR
   1 AN ESSR, Institut Astrofiziki i Fiziki Atmosfery, Tartu, Estonian SSR
   1 ADEMY OF SCIENCES, 251 65 ONDREJOV OBSERVATORY, CZECHOSLOVAKIA
   1 A. F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, 194021 St Petersburg, Russia
   1 A. F. Ioffe Institute for Physics and Technology, SU 194021, St Petersburg, Russia
   1 A. F. Ioffe Institute for Physics & Technology, 194021 St. Petersburg, Russia
   1 9624 Giddings Avenue NE, Albuquerque, NM 87109, USA
   1 601 Campbell Hall, Astronomy Department, University of California, Berkeley, CA 94720, USA
   1 601 Campbell Hall, Astronomy Department, University of California, Berkeley, CA 84720, USA
   1 4/1 Grant Crescent, Griffith, ACT 2603, Australia
   1 34 Greenways Drive, Endmoor, Kendal, Cumbria LA8 0EL, UK
   1 17 Manor Close, Hoghton, Preston PR5 0EN, UK
   1 160 HUNTINGDON ROAD., CAMBRIDGE CB3 0LB, UK
   1 105 Sovereigns Quay, Bedford, MK40 1TF, UK
   1 102 Admirals Walk, Bournemouth, Dorset BH2 5HF, UK
   1 102 Admirals Walk, Bournemouth BH2 5HF
   1 1. Gymnasium of Riga, Raina boulevard 8, LV-1050 Riga, Latvia
   1 (NASA, Goddard Space Flight Center, Theoretical Studies Group, Greenbelt, Md.
   1 #3 St-Amable, St-Guillaume, PQ J0C 1L0, Canada
