-
[1]
P. H. Damgaard and U. M. Hellcr, Phys, Lett., 171B(1986), 442.[2] P. H. Damgaard and U. M. Heller, Nucl. Phys，B294 (1987), 253[3] P. H. Damgaard and U. M. Heller, Nucl. Phys., B304(1988), 63.[4] T. Munehisa and Y. Munehisa, Z. Phys., C32 (1986), 531.[5] H. G. Evertz, J. Jersak and K. Kanaya, Nucl. Phys., B285 [FS19J (1987), 229.[6] C. -I Tan and X, T. Zheng, Phys. Rev., D39 (1989), 623.[7] H. Kuhnelt, C. B. Lang and G. Vones; Nucl. Phys., B230 [FS 10). (1984), 16[8] R. Brower, P. Rossi and C. -I Tan, Nucl. Phys., B190(1981), 699.[9] X, T. Zheng, Z. G. Tan and J. Wang, Nucl. Phys., B287 (1987), 171