参考文献

Iovel', I. G.; Gol'dberg, Yu. Sh.; Shimanskaya, M. V. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 12 p. 1316 - 1318 Khimiya Geterotsiklicheskikh Soedinenii, 1991 , # 12 p. 1640 - 1643