Keumi, Takashi; Yoshimura, Kiichiro; Shimada, Masakazu; Kitajima, Hidehiko
Bulletin of the Chemical Society of Japan, 1988 , vol. 61, p. 455 - 460

Keumi, Takashi; Saga, Hiroshi; Kitajima, Hidehiko
Bulletin of the Chemical Society of Japan, 1980 , vol. 53, # 6 p. 1638 - 1641

Keumi, Takashi; Taniguchi, Rikio; Kitajima, Hidehiko
Synthesis, 1980 , # 2 p. 139 - 141