Parfenov, E. A.; Smirnov, L. D.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1992 , vol. 28, # 3 p. 274 - 278
Khimiya Geterotsiklicheskikh Soedinenii, 1992 , # 3 p. 329 - 334

Ito, Keiichi; Higuchi, Yukako; Tame, Chika; Hariya, Junko
Heterocycles, 1993 , vol. 35, # 2 p. 937 - 947

Ito, Keiichi; Higuchi, Yukako; Tame, Chika; Hariya, Junko
Heterocycles, 1993 , vol. 35, # 2 p. 937 - 947

Ito, Keiichi; Higuchi, Yukako; Tame, Chika; Hariya, Junko
Heterocycles, 1993 , vol. 35, # 2 p. 937 - 947