by (United Kingdom)E.Whittaker...et al;by (Netherlands)G.Takeuti; by (United Kingdom)E.Breitmaier...et al;by (United Kingdom)L.J.Bellamy; by (United Kingdom)J.M.Cassels;by (Netherlands)P.J.Chen; by (United Kingdom)J.M.Ward;by (Netherlands)M.Benson; by (United Kingdom)N.Cutland;by (Netherlands)M.Fitting; by (United Kingdom)I.R.Gekker...et al;by (United Kingdom)I.S.Grant; by (United Kingdom)J.H.S.Blaxter...et al;by (United Kingdom)J.M.Sieburth; by (United Kingdom)V.Fretter...et al;by (United States)M.Hildebrand; by (United Kingdom)J.Foster...et al;by (United States)R.Ruffni; by (United Kingdom)M.P.Cohn;by (Netherlands)J.Dixmier;