by (United States)J.F.Rabek;by (United Kingdom)J.V.Dawkins; by (United States)J.Mehra;by (United Kingdom)J.L.Matin; by (United States)F.J.Tipler;by (United Kingdom)S.W.Hawking; by (United States)J.S.Kenyon;by (United Kingdom)J.W.Lewis; by (United States)M.A.Omar;by (United Kingdom)J.M.Ziman; by (United States)H.O.Stoarns;by (United Kingdom)J.Simpkins; by (United States)J.Callaway;by (United Kingdom)J.M.Cassels; by (United States)E.J.LeCuyer;by (United Kingdom)J.C.Mason; by (United States)E.P.Sheehy;by (United Kingdom)J.E.Rowley; by (United States)J.F.Nims;by (United Kingdom)F.T.Palgrave;