by (USSR)V.S.Vladimirov;by (United States)A.G.Webster; by (USSR)I.S.Dmitriev;by (United States)J.A.Kerr; by (USSR)V.Kostomarov;by (United States)B.Lott; by (USSR)V.V.Beloussov;by (United States)R.G.Park; by (USSR)A.M.Prokhorov;by (United States)M.A.Omar; by (USSR)A.Starkov;by (United States)K.Sandberg; by (USSR)A.V.Efimov;by (United States)M.Mandl; by (USSR)V.O.Toporkov;by (United States)C.Smith; by (USSR)A.O.Gelfond;by (United States)A.H.Nayfeh; by (USSR)S.P.Strelkov;by (United States)V.I.Arnold;