by (United Kingdom)N.S.Allen;by (United States)R.B.Cundall; by (United Kingdom)J.E.Allen;by (United States)M.Stoike; by (United Kingdom)A.Pillay;by (United States)R.Burton; by (United Kingdom)J.Culler;by (United States)R.Selden; by (United Kingdom)J.P.B.Allen;by (United States)G.Bloom; by (United Kingdom)K.A.Jensen;by (United States)R.E.Dodd; by (United Kingdom)P.J.Fleming;by (United States)R.Feynman; by (United Kingdom)M.C.Irwin;by (United States)R.K.Miller; by (United Kingdom)R.C.Helt;by (United States)R.H.Hammond; by (United Kingdom)H.Gupta;by (United States)R.K.Guy;