| Institution: | (1) Observatoire de Paris - Meudon, France;(2) Institute of Law Science at Utrecht, Utrecht, Germany;(3) Astronomical Institute, Ondrejov, Czechoslovakia;(4) University of Western Ontario, Ontario, Canada;(5) Observatoire Royal de Belgique, Belgium;(6) The Astronomical Institute at Utrecht, Utrecht, Germany;(7) Institute of Astronomy, Cambridge, USA;(8) Vrije Universiteit, Amsterdam, UK;(9) Kiruna Geophysical Institute, Germany;(10) Astronomical Institute, Slovak Academy of Sciences, Bratislava, Czechoslovakia |
