The University of British Columbia at Vancouver, Vancouver, Canada
T. K. Menon
Center for Plasma Astrophysics at Leuven, Leuven, Belgium
M. Goossens
Astronomical Institute “Anton Pannekoek”, University of Amsterdam, Amsterdam, The Netherlands
M. van der Klis
Laboratory for Space Research at Utrecht, Utrecht, The Netherlands
C. de Jager
Tartu Astrophysical Observatory at Toravere, (Estonia)
E. Saar
Netherlands Foundation for Research in Astronomy at Dwingeloo, Dwingeloo, The Netherlands
T. A. Th. Spoelstra
Leiden Observatory, The Netherlands
A. M. van Genderen
Simeiz Observatory, Crimea
Nikolai N. Gor'kavyi
SRON Laboratory for Space Research at Utrecht, Utrecht, The Netherlands
R. Mewe & Cornelis de Jager
Štefánik Observatory, Prague
J. Švestka
Astronomical Institute at Utrecht, Utrecht, The Netherlands
A. Achterberg