School of Mathematics, University of Newcastle upon Tyne, UK
Paul H. Roberts
MaX-Planck-Institut für extraterr. Physik, Garching, Germany
Manfred Scholer
The Astronomical Institute at Utrecht, Utrecht, The Netherlands
C. de Jager & Cornelis de Jager
Ondrřejov Observatory, Czechoslovakia
Zdeněk Ceplecha, Václav Bumba & L. Sehnal
Astronomical Institute, Tübingen, Germany
M. Grewing
Astronomical Institute, Slovak Academy of Sciences, Bratislava, Czechoslovakia
L. Kresák
Kapteyn Astronomical Institute, Groningen
S. R. Pottasch
Royal Greenwich Observatory, Herstmonceaux
Bernard Pagel
Institute of Law Science at Utrecht, Utrecht, The Netherlands
G. C. M. Reijnen
Goddard Space Flight Center, Greenbelt, Maryland
Norman F. Ness