参考文献
Pozharskii, A. F.; Nanavyan, I. M.; Kuz'menko, V. V.; Chernyshev, A. I.; Orlov, Yu. V.; Klyuev, N. A.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1989 , vol. 25, # 11 p. 1241 - 1253
Khimiya Geterotsiklicheskikh Soedinenii, 1989 , # 11 p. 1486 - 1499
