参考文献

Parfenov, E.A.; Smirnov, L.D. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 11 p. 1262 Khimiya Geterotsiklicheskikh Soedinenii, 1991 , # 11 p. 1562 - 1563