• [1]

    Z. Huang, K. S. Viswanathan and D. D., Wu, Simon Fraser Preprint, SFU-July-90-1, TO Be punlished; Z. Huang and D. D. Wu, SFU-July-90-2, Comm. Theo. iPhys/i. (Beijing), in press.[2] R. Dashen, iPhys/i. iRev/i, D3(1971), 1879.[3] R. Crewther, in Field theoretical, Methods in Partical Physics, NATO Advance Study Institute, Kaiser-slautern, Germany, 1979, ed. W. Ruhl(Plenum Press, New York and London, 1980); P. Di Vecchia and G. Veneziano, iPhys/i, B171(1980), 253; E. Witten, Ann. phys. (NY)128(1980), 363. G't Hooft, iPhys/i. Rep., 142(1986), 357, see Eq.(2.27).[4] Z. Huang and D. D. WU, SFU-July-90-3.[5] B. McKellar and D. D. Wu, in preoaration.