• [1]

    M. V. Berry, Proc. R. Soc. Lond.; A392(1984), 45.R. Jackiw, Com. Atom. Mole, Phys.; 21(1988), 71, and therein.[2] R. Tycko, Phys. Rev, Lett., 58(1987), 2281.D. J. Richardson et. al. Phys. Pev, Lett., 61(1988),2030.[3] M. V. Betty, Proc. R. Soc. Lond., A414(1987), 47[4] N. Nakagawa, Ann. Phys., 179(1987), 145.[5] C.P. Sun, Chinese Phys. Lett., 6(1989), 97.[6] N. Papanicolaou. J. Phys. France, 49(1988), 1493.[7] C.P. Sun, J. Phys. A21(1988), 1595.[8] 孙昌璞,高能物理与核物理,12(1988),352.