Suami, Tetsuo; Ogawa, Seiichiro; Takata, Makoto; Yasuda,Kuninobu; Takei, Kiyoshi; Suga, Atsuo Bulletin of the Chemical Society of Japan, 1986, vol. 59, # 3 p. 819 - 822 doi: 10.1246/bcsj.59.819