Institution: | Department of Meteorology, Stockholm University, S-106 91 Stockholm, Sweden;, Institut für Experimentalphysik, Universität Wien, Strudlhofgasse 4, A-1090 Wien, Austria;, Instituto FISBAT-CNR, Via de Castagnoli 1, 40126 Bologna, Italy;, Department of Nuclear Physics, University of Lund, Sölvegatan 14, S-223 62 Lund, Sweden |