参考文献

Yutilov, Yu.M.; Svertilova, I.A. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1994 , vol. 30, # 8 p. 928 - 933 Khimiya Geterotsiklicheskikh Soedinenii, 1993 , # 8 p. 1076 - 1081