-
[1]
R. Brower, P. Rossi and GT Tan, Nucl. Phys., B190 [FS3](1981), 699.[2] K. Ericksson, N. Svartholm and B. S. Skagerstam, CERN Preprint TH-2794(1980) .[3] 陈天岑、周洪模、李铁忠、冼鼎昌、郑希特, 高能物理与核物理, (待发表).[4] E. Fradkin, Phys. Rev., D19(1979), 3681.[5] T-L Chen, GI Tan and X-T Zheng, Phys. Rev. D26 (1982), 2843.