by (Federal Republic of Germany)J.Engelbrecht;by (United States)G.B.Whitham; by (Federal Republic of Germany)H.Federer;by (United States)G.Kothe; by (Federal Republic of Germany)A.Hilbert;by (United States)J.A.Hartigan; by (Federal Republic of Germany)P.Villaggio;by (United States)J.H.Weiner; by (Federal Republic of Germany)A.H.Volkel;by (United States)J.S.Trefil; by (Federal Republic of Germany)E.F.Beckenbach;by (United States)G.Burns; by (Federal Republic of Germany)G.Fuchs;by (United States)G.T.Kurian; by (Federal Republic of Germany)J.S.Bach; (United States)C.V.Palisca; by (Federal Republic of Germany)J.Wittenbury;by (United States)F.Chorlton; by (Federal Republic of Germany)T.Matsubara;by (United States)D.R.Bates;