-
[1]
E. Farhi L. Susskind, Phys. Rep. ,74(1981) , 277.[2]M. Goldon and P. Langadeer,Phys. Rev. ,D44(1991), 1591;D. Kennedy and P. Langadeer,Nucl. Phys. ,B361(1991) , 3.[3]R. Johnson and Bing-lin Young,W. Mckay,Phys. Rev. ,D42(1990),3855.[4]E. Eichten,I. Hinchliffe et al. ,Rev. Mod. Phys. ,56(1984) ,579.[5]S. Dimopoulos and S. Raby,G. L. Kane,Nucl. Phys. ,B182(1981),77.[6]R. Brown et al. ,Phys. Rev. ,D20(1979),1164.[7]K. Lane and M. V. Ramana,BUHEP-91-6.