by (United States)P.J.Bickel;by (Federal Republic of Germany)W.Eberl; by (United States)R.J.Bell;by (Federal Republic of Germany)W.Demtroder; by (United States)G.T.Kurian;by (Federal Republic of Germany)E.Glaber; by (United States)W.Rudin;by (Federal Republic of Germany)I.E.Segal; by (United States)F.H.Croon;by (Federal Republic of Germany)A.Dold; by (United States)V.Baractt;by (Federal Republic of Germany)K.Its; by (United States)D.Seyferth;by (Federal Republic of Germany)W.P.Weber; by (United States)W.R.Derrick;by (Federal Republic of Germany)C.Faith; by (United States)D.A.Marcus;by (Federal Republic of Germany)E.Hecke; by (United States)C.R.Rao;by (Federal Republic of Germany)W.J.J.Rey;