参考文献

Afanas'ev, A. Z.; Yurovskaya, M. A.; Bundel, Yu. G. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 1 p. 112 - 113 Khimiya Geterotsiklicheskikh Soedinenii, 1987 , vol. 23, # 1 p. 134 - 135