Ishibashi, Hiroyuki; Takamuro, Iwao; Mizukami, Yo-ichi; Irie, Maki; Ikeda, Masazumi
Synthetic Communications, 1989 , vol. 19, # 3and4 p. 443 - 452

Fernandez, I.; Llera, J. M.; Zorrilla, F.; Alcudia, F.
Phosphorus, Sulfur and Silicon and the Related Elements, 1990 , vol. 47, p. 291 - 301