by (United States)C-G.Rota;by (USSR)C.Kosniowski; by (United States)T.Jech;by (USSR)K.Kuratowski; by (United States)L.Pisk;by (USSR)C.Stanislasik; by (United States)S.N.Rasband;by (USSR)B.Skalmierski; by (United States)S.Helgason;by (USSR)S.Kobayashi; by (United States)M.E.Harr;by (USSR)S.G.Lekhnitskii; by (United States)P.L.Knowles;by (USSR)V.Kostomarov; by (United States)W.E.Boyce;by (USSR)I.P.Kopylov; by (United States)S.Scull;by (USSR)A.Starkov; by (United States)C.Nielsen;by (USSR)N.Rimski-Korssakow;