参考文献
Mikhaleva, M. A.; Bolotin, B. M.; Serebryakova, E. S.; Safina, R. U.; Kizner, T. A.; Sklyarova, E. G.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1992 , vol. 28, # 3 p. 316 - 320
Khimiya Geterotsiklicheskikh Soedinenii, 1992 , # 3 p. 377 - 381
