J.Bystricky1,J.Deregel1,F.Lehar1,A.De Lesquen1, L.Van Rossum1,J.M.Fontaine1,F.Perrot1,T.Hasegawa2, C.Newson3,Y.Onel4,A.Penzo5 C.E.N. Saclay1 Institute for Nuclear Study, Univ. of Tokyo, Tanashi2 University of California, Los Angeles, CA3 Univ. of Geneva4 Univ. of Trieste5
Lettere al Nuovo Cimento40(1984)466