参考文献
Kelarev, V. I.; Bellul', M.; Karakhanov, R. A.; Ammar, Dibi; Lunin, A. F.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 3 p. 298 - 304
Khimiya Geterotsiklicheskikh Soedinenii, 1987 , vol. 23, # 3 p. 356 - 362