by (USSR)R.Baker;by (United States)S.C.Brownstein; by (United States)S.C.Brownstein;by (United States)S.C.Brownstein; by (USSR)L.Dobrzynski;by (United States)D.F.Brewer; by (USSR)M.Baryshnikov;by (United States)C.R.Jones; by (USSR)I.Duncan; (United States)C.Payne; by (United States)P.G.Burke;by (United States)R.B.Bernstein; by (USSR)I.A.Rrezanov;by (United States)N.C.Barford; by (USSR)S.Tolansky;by (United States)R.D.Juday; by (United States)G.Gratzer;by (United States)L.C.Brove; by (United States)W.Feit;by (United States)D.Gorenstein;