参考文献

Krapivin, G. D.; Kul'nevich, V. G.; Val'ter, N. I., Chemistry of Heterocyclic Compounds (New York, NY, United States), 1989 , vol. 25, # 10 p. 1118 - 1121 Khimiya Geterotsiklicheskikh Soedinenii, 1989 , # 10 p. 1338 - 1342