Laboratory for Extraterrestrial Physics NASA/Goddard Space Flight Center at Greenbelt, Greenbelt, USA
L. F. Burlaga
Ondřejov Observatory, Czechoslovakia
J. Kleczek
Paris Observatory at Meudon, Meudon, France
E. Schatzman
Astronomy Group of the University of Leicester at Leicester, Leicester, England
D. J. Adams
Sterrekundig Instituut Utrecht, Utrecht, The Neithelands
R. J. Rutten
Kapteyn Astronomical Institute at Groningen, Groningen, The Neithelands
P. C. Van Der Kruit
SRON Laboratory for Space Research at Utrecht, Utrecht, The Neithelands
Cornelis De Jager
ESTEC at Noordwijk, Noordwijk, The Neithelands
N. R. Trams
Department of Astronomy and Space Science, University of Florence, Italy
Alberto Righini
Department of Physics of Tartu University at Tartu, Estonia
E. Ergma
Max-Planck-Institut für Kernphysik at Heidelberg, Heidelberg, Germany
Eberhard Grün
Sterrewacht Leiden, Leiden, The Neithelands
Vincent Icke