参考文献

Gorodnyuk, V. P.; Ivanov, O. V.; Kotlyar, S. A. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1990 , vol. 26, # 12 p. 1414 - 1415 Khimiya Geterotsiklicheskikh Soedinenii, 1990 , # 12 p. 1697 - 1698