参考文献

Zhestkov, V.P.; Voronin, V.G.; Portnov, Yu.N. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1983 , vol. 19, p. 863 - 867 Khimiya Geterotsiklicheskikh Soedinenii, 1983 , vol. 19, # 8 p. 1076 - 1081