Department of Physics, University La Sapienta, Rome
G. V. Pallottino
Astronomical Institute at Utrecht, Utrecht, The Netherlands
J. R. W. Heintze
Institute for Marine and Atmospheric Research at Utrecht, Utrecht, The Netherlands
A. J. van Delden
Keldysh Institute of Applied Mathematics, Moscow
Mikhail Ya. Marov
Astronomical Institute, at Utrecht, Utrecht, The Netherlands
J. M. E. Kuijpers
Department of Physics of the University of Nijmegen, Nijimegen, The Netherlands
J. M. E. Kuijpers
Netherlands Foundation for Research in Astronomy at Dwingeloo, Dwingeloo, The Netherlands
T. A. Th. Spoelstra
Observatory of the University at Göttingen, Göttingen, Germany
H. H. Voigt
Museum Boerhaave, Leiden
R. H. van Gent
Astronomical Institute ‘Anton Pannekoek’ at Amsterdam, Amsterdam, The Netherlands
P. S. Thé
Astronomical Institute ‘Anton Pannekoek’, University of Amsterdam, Amsterdam, The Netherlands
Huib Henrichs
Leiden Observatory, Leiden, The Netherlands
V. Icke