| Institution: | 1. Space and Solar-Terrestrial Research Institute, Bulgarian Academy of Sciences, Stara Zagora Department, P.O. Box 73, 6000 Stara Zagora, Bulgaria;2. Norwegian Institute for Air Research (NILU), P.O. Box 100, N-2027 Kjeller, Norway;3. Norwegian Institute for Air Research (NILU), The Polar Environmental Centre, Polarmiljøsenteret, N-9296 Tromsø, Norway;4. Norwegian Defence Research Establishment (FFI), P.O. Box 25, N-2027 Kjeller, Norway;5. Andoya Rocket Range, ALOMAR, P.O. Box 54, N-8483 Andenes, Norway;6. Arctic Research Centre, Finnish Meteorological Institute, Tahtelantie 62, 99600 Sodankylä, Finland;g Alfred Wegener Institute for Polar and Marine Research (AWI), P.O. Box 600149, 14401 Potsdam, Germany;h Geophysical Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. Block 3, 1113 Sofia, Bulgaria |
