by (United States)J.M.Cram;by (United States)D.J.Cram;by (United Kingdom)I.L.Finar; by (United States)D.I.Porat;by (United States)A.Barna;by (United Kingdom)J.P.Hawker; by (United States)J.Ostrom;by (United States)W.Cook;by (United Kingdom)H.J.Sachs; by (United States)J.L.Matson;by (United States)C.L.Frame;by (United Kingdom)M.Malvey; by (United States)R.V.Hogg;by (United States)A.T.Craig;by (United Kingdom)M.Kendall; by (United States)R.B.Ash;by (United States)M.F.Gardner;by (United Kingdom)I.V.Basawa; by (United States)A.E.Roy;by (United States)D.Carke;by (United Kingdom)V.Illingworth; by (United States)S.C.Port;by (United States)C.J.Stone;by (United Kingdom)D.Rowntree; by (United States)J.Eisen;by (United States)S.Troy;by (United Kingdom)M.Booth; by (United States)F.Rissover;by (United States)D.C.Birch;by (United Kingdom)S.N.Nagi;