D. Bilitza
George Mason University
L. Třı́sková
Czech Academy of Sciences, Institute of Atmospheric Physics
J. Šmilauer
Czech Academy of Sciences, Institute of Atmospheric Physics
Ludmila Třísková
Czech Academy of Sciences, Institute of Atmospheric Physics
R. F. Benson
Corning (United States)
Dmytro Kotov
Institute of Ionosphere
P. G. Richards
University of Alabama in Huntsville
Jaroslav Chum
Czech Academy of Sciences, Institute of Atmospheric Physics
Oleksandr Bogomaz
National Technical University "Kharkiv Polytechnic Institute"
Kateřina Podolská
Czech Academy of Sciences, Institute of Atmospheric Physics
Russian Academy of Sciences
Space Research Institute
Czech Academy of Sciences, Institute of Atmospheric Physics
Goddard Space Flight Center
Czech Academy of Sciences
Moscow Engineering Physics Institute
Nagoya University
Institute of Terrestrial Magnetism Ionosphere and Radio Wave Propagation
Ioffe Institute
Lomonosov Moscow State University