-
[1]
K.Igi and S. Ono, Phys. Rev., D32(1985), 232.[2] M.Frank and P. J. O'Donnell, Z. Phys., C34(1987), 39[3] S.Chakrabarty and S. Deoghuria, J. Phys., G16(1990), 185.[4] M.Frank and P. J. O'Donnell, Phys.Lett，159B(1985), 174.[5] D. B. Lichtenberg, Phys. Lett., 193B(1987),95.[6] D. Gromes, Nucl. Phys., B131(1977), 80;S. Jacobs, M. G. Olsson and C. J. Suchyta,Phys. Rev.,D35(1987), 2448.[7] Xiaotong Song, Phys. Rev.,D40(1989), 3655.[8] W. Buchmuller, Y. J. Ng and S. H. H. Tye, Phys. Rev., D24(1981), 3003.[9] S. Sato, Nuovo Cimenzo, 103A(1990), 471.[10] H. W. Crater and P. Van Alstine, Phys,Lett., 100B(1981), 166.[11] R. W. Childers, Phys. Lett., 1218(1983), 485.H. W. Crater and P. Van Alstine, Phys. Rev. Lett 53(1984), 1527[12] H. W. Crater Van Alstine, Phys: Rev.,D37(1988), 1982.[13] Particle Data Phys. Lett., 239B(1988), 1; Phys. Lett., 239B(1990), 1