参考文献

Kazankov, M. V.; Bernadskii, M. I. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1984 , vol. 20, # 7 p. 808 - 812 Khimiya Geterotsiklicheskikh Soedinenii, 1984 , # 7 p. 989 - 993