1. Space Research Institute Austrian Academy of Sciences Graz Austria
2. Institute of Physics University of Graz Graz Austria
3. Earth's Physics Deptartment St. Petersburg State University St. Petersburg Russia
4. Los Alamos National Laboratory Los Alamos NM USA
5. Space Research Institute Russian Academy of Sciences Moscow Russia
6. Space Science and Engineering Southwest Research Institute San Antonio TX USA
7. Goddard Space Flight Center NASA Greenbelt MD USA
8. Space Science Center University New Hampshire Durham NH USA