by (United Kingdom)V.L.Ginzburg;by (United States)R.M.Besancon; by (United Kingdom)K.J.Binns;by (United States)R.L.Gray; by (United Kingdom)A.M.Burt;by (United States)D.M.Clausen; by (United Kingdom)J.C.Mcveigh;by (United States)R.W.Lane; by (United Kingdom)P.Hariharan;by (United States)R.G.Newton; by (United Kingdom)V.I.Arnold;by (United States)M.P.Do Carmo; by (United Kingdom)W.Irving;by (United States)R.Jordania; by (United Kingdom)A.Jennings;by (United States)R.C.Ward; by (United Kingdom)A.Pillay;by (United States)R.Burton; by (United Kingdom)K.A.Jensen;by (United States)R.E.Dodd;