1. Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
2. Space Research Institute, Austrian Academy of Sciences; Graz Austria
3. Max Planck Institute for Extraterrestrial Physics; Garching Germany
4. Space Science and Technology Department, RAL; Didcot UK
5. Mullard Space Science Laboratory; Dorking UK
6. Department of Physics and Astronomy; University of Leicester; Leicester UK
7. Space Science Center; University of New Hampshire; Durham New Hampshire USA
8. Los Alamos National Laboratory; Los Alamos New Mexico USA
9. Center for Space Science and Applied Research; Chinese Academy of Sciences; Beijing China
10. CESR/CNRS; Toulouse France