参考文献

Parfenov, E. A.; Smirnov, L. D. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 8 p. 825 - 830 Khimiya Geterotsiklicheskikh Soedinenii, 1991 , # 8 p. 1032 - 1037