参考文献

Gashev, S. B.; Sedova, V. F.; Smirnov, L. D.; Mamaev, V. P. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1983 , vol. 19, # 9 p. 1008 - 1012 Khimiya Geterotsiklicheskikh Soedinenii, 1983 , # 9 p. 1257 - 1261