editors, F. Persico, E. A. Power ; recognized by the European Physical Society. editors, T. Aberg, S. Stenholm. ; recognized by the European Physical Society. editor, R. Bingham ... [et al.]. ; recognized by the European Physical Society. editor, R. Wappoling ; recognized by the European Physical Society. S. Sottini, S. Trigari, editors ;sponsored by The European Physical Society. Guy J. Lebreton ;sponsored by EPS-European Physical Society. General Conference of the European Physical Society