参考文献

Andreichikov, Yu. S.; Nekrasov, D. D.; Rudenko, M. A.; Vinokurova, O. V. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1989 , vol. 25, # 9 p. 1059 - 1061 Khimiya Geterotsiklicheskikh Soedinenii, 1989 , # 9 p. 1265 - 1268