T.Mikumo1, H.Yamaguchi1, I.Nonaka1, M.Odera2, Y.Hashimoto3, M.Kondo2, T.Maki4 Institute for Nuclear Study, Univ. of Tokyo, Tanashi1 Tokyo Inst.of Technology, Tokyo2 Univ. of Tokyo, Tokyo3 Kyushu Univ., Fukuoka4
Journal of the Physical Society of Japan15(1960)1158