参考文献

Tsupak, E. B.; Tkachenko, Yu. N.; Pozharskii, A. F. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1994 , vol. 30, # 9 p. 1077 - 1082 Khimiya Geterotsiklicheskikh Soedinenii, 1994 , # 9 p. 1242 - 1248