Koto, Shinkiti; Morishima, Naohiko; Kihara, Yasuhiro; Suzuki, Hideko; Kosugi, Shigeharu; Zen, Shonosuke Bulletin of the Chemical Society of Japan, 1983, vol. 56, # 1 p. 188 - 191 doi: 10.1246/bcsj.56.188