by (United States)David Gilbarg;by (United States)Neil S.Trudinger;by (United States)N.P.Bali; by (United States)David L.Winter;by (United States)Mary Jean Winter;by (United States)Robert T.Graue by (United States)M.Harwit;by (United States)N.J.A.Sloane;by (United States)R.J.Bell; by (United States)David W.Louisell;by (United States)Geoffrey C.Hazard;by (United States)Colin C.Tai by (United States)David W.Oxtoby;by (United States)Norman H.Nachtrieb;by (United States)Campbell R.M by (United States)D.R.Bates;by (United States)B.Bederson;by (United States)R.Balian; by (United States)J.Carmona;by (United States)N.Vergne;by (United States)J.Fogarty; by (United States)Marvin Gore;by (United States)John Stubbe;by (United States)David W.O.; by (United States)David Halliday;by (United States)Robert Resnick;by (United States)Jon Eisenson; by (United States)David W.O.;by (United States)Norman H.N.;by (United States)James A.O.;