参考文献

Doronina, S. O.; Gall', A. A.; Shishkin, G. V. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 8 p. 897 - 900 Khimiya Geterotsiklicheskikh Soedinenii, 1991 , # 8 p. 1117 - 1120