by (USSR)K.Kuratowski;by (United States)L.P.Maher; by (USSR)C.Kosniowski;by (United States)W.S.Massey; by (USSR)L.Dobrzynski;by (United States)D.F.Brewer; by (USSR)N.V.Efimov;by (United States)M.J.Kallaher; by (USSR)O.V.Chernyak;by (United States)V.M.Faires; by (USSR)O.V.Krylov;by (United States)P.M.Henry; by (USSR)B.J.Zwolinski;by (United States)R.R.Shannon; by (USSR)D.N.Trifonov;by (United States)L.K.Williams; by (USSR)A.Starkov;by (United States)K.Sandberg; by (USSR)A.V.Efimov;by (United States)M.Mandl;