Hubrecht Laboratory, Utrecht
G. A. Ubbels
Free University, Amsterdam
J. W. Hovenier
University of California, California, USA
C. T. Russell
Sonnenborgh Observatory, Utrecht
H. Nieuwenhuijzen & J. R. W. Heintze
Netherlands Agency for Aerospace Programs, Delft
P. F. J. Linssen
Kapteyn Astronomical Institute, Groningen
P. C. van der Kruit
Astronomical Institute ‘Anton Pannekoek’, University of Amsterdam, Amsterdam
P. S. Thé
Central Research Institute of Physics, Budapest
Antal J. Somogyi, S. Cuperman & Y. Rephaeli
Tel Aviv University, Tel Aviv
G. M. Stirpe
Sterrewacht Leiden, Leiden, The Netherlands
J. Kleczek & L. Sehnal
The Astronomical Institute, Ondřejov, Czechoslovakia
L. Kresák
Astronomical Institute at Bratislava, Czechoslovakia
M. de Kool
Astronomical Institute of the University at Amsterdam, Amsterdam, UK
A. H. Wapstra
National Institute for Nuclear and High-Energy Physics, Amsterdam, UK
B. N. Swanenburg
Laboratory for Space Research, Leiden
P. Hoyng
Laboratory for Space Research, Utrecht
G. C. M. Reijnen
Faculty of Law, University of Utrecht, Utrecht
B. V. Somov
Lebedev Physical Institute, Moscow, U.S.S.R.
K. A. van der Hucht
SRON Laboratory for Space Research, Utrecht
O. Namba
‘Sonnenborgh’ Observatory, University of Utrecht, Utrecht
A. W. Schwartz
Laboratory for Exobiology of the Catholic University, Nijmegen, The Netherlands
H. v.d. Stadt
Observatory ‘Sonnenborgh’, Utrecht
D. McNally
University of London Observatory (University College London), NW7 28S, London
D. de Hoop