参考文献

Iovel', I. G.; Yansone, I. Ya.; Gol'dberg, Yu. Sh.; Shimanskaya, M. V. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1990 , vol. 26, # 4 p. 456 - 461 Khimiya Geterotsiklicheskikh Soedinenii, 1990 , # 4 p. 532 - 537