Nakata, Masaya; Ohashi, Junji; Ohsawa, Kunihiko; Nishimura, Toru; Kinoshita, Mitsuhiro; Tatsuta, Kuniaki Bulletin of the Chemical Society of Japan, 1993, vol. 66, # 11 p. 3464 - 3474 doi: 10.1246/bcsj.66.3464