参考文献

Filatov, I. E.; Kulikov, Yu. V.; Rusinov, G. L.; Pashkevich, K. I. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1990 , vol. 26, # 7 p. 834 Khimiya Geterotsiklicheskikh Soedinenii, 1990 , # 7 p. 995