by (USSR)A.Member;by (Federal Republic of Germany)A.J.Ashe III...et al; by (USSR)S.Prokofiev;by (Federal Republic of Germany)F.J.Haydn...et al; by (USSR)M.I.Kargaplov;by (Federal Republic of Germany)R.C.Lyndon...et al; by (United States)P.Urban;by (Federal Republic of Germany)A.I.Akhiezer...et al; by (USSR)T.Sarpkaya...et al; (Federal Republic of Germany)C.A.Brebbia...et al; by (USSR)R.Pribil;by (Federal Republic of Germany)E.Hogfeldt; by (United States)D.J.Newman;by (Federal Republic of Germany)A.Bachem...et al; by (USSR)I.L.Bim;by (Federal Republic of Germany)H.Stalb; by (United States)H.S.Booth;by (Federal Republic of Germany)A.L.Bhuivan...et al; by (United States)L.J.Berliner;by (Federal Republic of Germany)M.J.Clarke...et al;