by (United Kingdom)J.K.M.Sanders;by (United Kingdom)B.K.Hunter;by (United States)P.Sohar; by (United Kingdom)L.Cooper;by (United Kingdom)M.W.Cooper;by (United States)B.Bank; by (United Kingdom)O.J.Bird;by (United Kingdom)C.J.A.May;by (United States)B.Grob; by (United Kingdom)J.C.Jaegor;by (United Kingdom)A.M.Starfield;by (United States)C.C.Lin; by (United Kingdom)M.Begon;by (United Kingdom)M.Mertimer;by (United States)J.Browne; by (United Kingdom)P.Jorgensen;by (United Kingdom)J.Oddershede;by (United States)C.S.Johnson; by (United Kingdom)P.Horowitz;by (United Kingdom)W.Hill;by (United States)R.S.Carson; by (United Kingdom)J.S.Rowlinson;by (United Kingdom)B.Widom;by (United States)E.Matijevic; by (United Kingdom)B.K.Harris;by (United Kingdom)G.R.Noakes;by (USSR)I.E.Irodov; by (United Kingdom)J.K.Neufeld;by (United Kingdom)J.P.B.Allen;