by (USSR)A.V.Efimov;by (United States)M.Mandl; by (USSR)N.V.Efimov;by (United States)M.J.Kallaher; by (USSR)M.L.Krasonv;by (United States)S.Lang; by (USSR)O.V.Krylov;by (United States)P.M.Henry; by (USSR)A.Starkov;by (United States)K.Sandberg; by (USSR)A.M.Prokhorov;by (United States)M.A.Omar; by (USSR)V.V.Beloussov;by (United States)R.G.Park; by (USSR)A.V.Bitsadze;by (United States)F.Bloom; by (USSR)A.O.Gelfond;by (United States)A.H.Nayfeh; by (USSR)M.Baryshnikov;by (United States)C.R.Jones;