参考文献

Baranov, S. V.; Mochalin, V. B. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1981 , vol. 17, # 8 p. 779 - 782 Khimiya Geterotsiklicheskikh Soedinenii, 1981 , # 8 p. 1054 - 1057