参考文献

Tokmakov, G.P.; Grandberg, I.I. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1980 , vol. 16, # 3 p. 244 - 247 Khimiya Geterotsiklicheskikh Soedinenii, 1980 , vol. 16, # 3 p. 331 - 334