by (United Kingdom)W.B.Willcox;by (Federal Republic of Germany)A.Helbok; by (United Kingdom)C.M.Will;by (Federal Republic of Germany)H.Weyl; by (United Kingdom)J.M.Ziman;by (Federal Republic of Germany)P.Bruesch; by (United Kingdom)J.F.Lee;by (Federal Republic of Germany)J.Messer; by (United Kingdom)R.Schumann;by (Federal Republic of Germany)J.Haydn; by (United Kingdom)D.H.Perkins;by (Federal Republic of Germany)A.H.Volkel; by (United Kingdom)J.A.Hudson;by (Federal Republic of Germany)I.A.Kunin; by (United Kingdom)C.D.Collinson;by (Federal Republic of Germany)G.Gallavotti; by (United Kingdom)J.Hamilton;by (Federal Republic of Germany)G.Eilenberger; by (United Kingdom)M.H.Degroot;by (Federal Republic of Germany)B.R.Frieden;