Author(s): K. J. H. Phillips, J. Sylwester, B. Sylwester, and V. D. Kuznetsov
Affiliation(s): Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK; Space Research Centre, Polish Academy of Sciences, 51-622, Kopernika 11, Wroclaw, Poland; Institute of Terrestrial Magnetism and Radiowave Propagation (IZMIRAN), Troitsk, Moscow, Russia
