参考文献

Sergovskaya, N. L.; Chernyak, S. A.; Shekhter, O. V.; Tsizin, Yu. S. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 8 p. 888 - 891 Khimiya Geterotsiklicheskikh Soedinenii, 1991 , # 8 p. 1107 - 1109