1. Institute of Physics; St. Petersburg State University; St. Petersburg Russia
2. Mullard Space Science Laboratory; University College London; Dorking UK
3. Space Research Institute; Austrian Academy of Science; Graz Austria
4. University of California; Los Angeles California USA
5. Centre d'Etude Spatiale des Rayonnements; CNRS; Toulouse France
6. MPS; Katlenburg-Lindau Germany
7. Laboratory of Space Weather; CSSAR/CAS; Beijing China
8. Space and Atmospheric Physics; Imperial College; London UK