by (USSR)L.S.Landau;by (USSR)A.I.Kitaigorodsky;by (United States)F.Kohlrausch; by (USSR)J.Mika;by (USSR)T.Torok;by (United States)H.W.Siesler; by (USSR)A.K.Ghatak;by (USSR)K.Thyagarajan;by (United States)J.D.Gaskill; by (USSR)E.M.Lifshitz;by (USSR)L.P.Pitacvskii;by (United States)H.Mitter; by (USSR)A.K.Kikoin;by (USSR)I.K.Kikoin;by (United States)G.H.F.Diercksen; by (USSR)N.V.Kopchenova;by (USSR)I.A.Marcon;by (United States)G.I.Marchuk; by (USSR)W.Marek;by (USSR)J.Onyszkiewicz;by (United States)J.L.Bell; by (USSR)Yu S.Lyalikoy;by (USSR)Yu A.Klyachko;by (United States)R.K.McAlpine; by (USSR)M.I.Kaganov;by (USSR)I.M.Lifshits;by (United States)M.Levy...et al; by (USSR)A.I.Kitaigoredsky;by (United States)H.Keune...et al;