by (United Kingdom)K.Petersen;by (Federal Republic of Germany)R.Artzy...et al; by (United Kingdom)J.E.Saxton;by (Federal Republic of Germany)H-J.Cantow...et al; by (United Kingdom)H.Matsumura; (Federal Republic of Germany)R.Gobel...et al; by (United Kingdom)J.Brjckington;by (Federal Republic of Germany)E.Colomer...et al; by (United States)E.Seneta;by (Federal Republic of Germany)M.Arato...et al; by (United States)D.J.Newman;by (Federal Republic of Germany)A.Bachem...et al; by (United Kingdom)D.C.Bassett;by (Federal Republic of Germany)H.Bottger; by (United Kingdom)J.A.Hudson;by (Federal Republic of Germany)I.A.Kunin; by (United States)J.Fogarty;by (Federal Republic of Germany)R.Gobel...et al; by (United States)J.Kagan;by (Federal Republic of Germany)G.Mathe...et al;