Institution: | 1. Laboratory for Space Research Leiden, P.O. Box 9504, Huygens Laboratorium, Leiden, The Netherlands;2. Laboratory for Space Research Utrecht, Utrecht, The Netherlands;3. Space Science Department of ESA, ESTEC, Noordwijk, The Netherlands;4. Istituto di Fisica dell''Universita Palermo, Palermo, Italy;5. Mullard Space Science Laboratory, Holmbury St. Mary, U.K. |