• [1]

    M .Gell -Mann, Phys. Lett., 8(1964), 214.[2] E. R. Nakamura, Lecture in Introduction to Yarton Model (Shanghai, 1989).[3] M. Oka and K. Yazaki, Prog. Theor. Phys., 66(1981), 556, 572; Nucl. Phys., A4Q2(1983), 477.[4] Y. He, F. Wang and C. W. Wong, Nucl. Phys., A448(1986), 652.[5] Z. Y. Zang et al., Nucl. Phys., A443(1985), 557.[6] A. Faessler et al., Phys. Lett., 112B(1982), 201.[7] Y. Suzuki and K. T. Hecht, Phys. Rev., C27(1983), 299[8] X. J. Qiu and X. M. Xu, Nucl. Phys., A(in press).[9] M. C. Birse and M. K. Banerjee, Phys. Lett., 136B(1984), 284.[10] S. Kahana and G. Ripka, Nucl. Phys., A429(I984), 462.[11] X. J. Qiu, L. H, Wang and R. C. Hou, Phys. Rev., C30(1984),1731[12] L. S. Celenza et al., Phys. Rev., C31(1985), 232.[13] C. W. along, Nucl. Phys., A435(1985), 669.[14] A. Chodos and C. B. Thorn, Phys. Rev., D12(1975), 2733.[15] T. E. O. Ericson and W.Weise, Pions and Nuclei (Oxford Press 1987) ch.3.[16] R. A. Arndc et al., Phys. Rev., C15(1977), 1002.