by (Federal Republic of Germany)M.M.Lipschutz;by (United States)M.Spivak; by (Federal Republic of Germany)A.J.Chintschin;by (United States)H.Cohn; by (Federal Republic of Germany)P.Bruesch;by (United States)N.P.Suh; by (Federal Republic of Germany)Z.M.Nashed;by (United States)M.Schechter; by (Federal Republic of Germany)M.Schochter;by (United States)R.P.Sperb; by (Federal Republic of Germany)D.Britz;by (United States)H.Bloom; by (Federal Republic of Germany)T.S.Huang;by (United States)L.Levi; by (Federal Republic of Germany)W.J.J.Rey;by (United States)M.R.Spiegel; by (Federal Republic of Germany)C.Faith;by (United States)G.Fuller; by (Federal Republic of Germany)A.Fitzpatrick;by (United States)M.Kneler;