• [1]

    CHAO A. Proceedings of MBI97, 19972 GUO Z Y et al. Proceedings of EPAC96, 1996; MBI97, 1997 ; AF'AC98, 1998 and PAC99, 19993 lzawa M et al. Phys. Rev. Lett. , 1995, 744 Ohmi. Phys. Rev., 1997, E55