参考文献
Yurovskaya, M. A.; Chertkov, V. A.; Afanas'ev, A. Z.; Ienkina, F. V.; Bundel', Yu. G.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 4 p. 424 - 433
Khimiya Geterotsiklicheskikh Soedinenii, 1985 , vol. 21, # 4 p. 509 - 518
