by (United States)S.Scull;by (USSR)A.Starkov; by (United States)J.Bass;by (USSR)A.V.Efimov; by (United States)S.Lang;by (USSR)V.A.Llyin; by (United States)J.W.Mellor;by (USSR)G.N.Yakovlev; by (United States)L.Pisk;by (USSR)C.Stanislasik; by (United States)R.Ruffni;by (USSR)A.A.Logunov; by (United States)T.Aubin;by (USSR)A.V.Bitsadze; by (United States)C.A.Schuler;by (USSR)G.I.Yepifanov; by (United States)M.C.Volpel;by (USSR)A.O.Gelfond; by (United States)A.Ghatak;by (USSR)A.K.Ghatak;