H.Izumi1,K.Asahi1,H.Ueno1,H.Okuno2,H.Sato1,K.Nagata1, Y.Hori1,M.Adachi1,N.Aoi3,A.Yoshida2,G.Liu2, N.Fukunishi2,M.Ishihara2 Tokyo Inst.of Technology, Tokyo1 Inst.of Physical and Chemical Res. (RIKEN2 Univ. of Tokyo, Tokyo3
Physics Letters,Section B366(1996)51