参考文献

Gashev, S. B.; Lezina, V. P.; Smirnov, L. D. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1983 , vol. 19, # 9 p. 1003 - 1007 Khimiya Geterotsiklicheskikh Soedinenii, 1983 , # 9 p. 1252 - 1256