T.S.Bhatia1,G.Glass1,J.C.Hiebert1,L.C.Northcliffe1, W.B.Tippens1,B.E.Bonner2,J.E.Simmons2,C.L.Hollas3, C.R.Newsom3,P.J.Riley3,R.D.Ransome3 Texas A & M University, College Station, TX1 Los Alamos National Laboratory, NM2 University of Texas, Austin, TX3
Physical Review Letters48(1982)227