参考文献

Gornostaev, L. M.; Zeibert, G. F.; Zolotareva, G. I. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1980 , vol. 16, # 7 p. 704 - 707 Khimiya Geterotsiklicheskikh Soedinenii, 1980 , # 7 p. 912 - 915