-
[1]
V.de Alfaro, S. Fubini, Nuovo Cimemto, 34A(1976), 521.[2] V.de Alfaro, G. Furlan, Nuovo Cimevto, 34A(1976), 555.[3] H.Inagaki, Phys. Lett., 69B(1977), 448.[4] A. 0. Barut, B. W. Xu 许伯威.Phys. Lett., 102B(1981),37.[5] A. 0. Barut, B. W. Xu 许伯威.Phys. Rev.; D23(1981), 3076.[6] C. G. Callan, S. Coleman, R. Jackiw, Ann. Phys., 59(1970), 42.[7] B.W. Xu 许伯威.Jour. Phys., A14(1981) , L97.[8] B. W.Xu 许伯威，Jour. Phys., A14(1981), L125.[9] B. W. Xu 许伯威.Jour. Phys., A15(1982), L329.[10] A, Actor, Z. Phys., C3(1980),353.[11] A. Actor, Ann. Phys., 131(1981),269.[12] W. Heisenberg, Z. Naturforsch, 9A (1954),210.[13] V. de Alfaro, S. Fubini, G. Furlan, Phys, Lett., 65B (1976),163