-
[1]
A. Krzywicki, J. Engel and B. Petersson, Phys. Lett , 85B(1979), 407.M. Lev and B. Petersson, Z. Physik, C21(1983), 155.[2] J F. Owens and E. Reya, Phys. Rev., D17(1978), 3033.[3] R. Baier, J. Engels and B. Petersson, 2. Physik,C2(1979), 265.[4] B. L. Combridge, J. Kripfganz and J. Ranft, Phys. Lett., 70B(1977) ,234.[5] UA2 collab., Phys. Lett., 144B(1984), 283.[6] Y. B. Hsiung, et al., Phys. Rev. Lerz, 55(1985), 457.[7] M. Diemoz, F. Ferroni and E. Longo, Phys. Rep, 130(1986), 293.