参考文献
Shepelenko, E. N.; Dubonosov, A. D.; Lyubarskaya, A. E.; Bren, V. A.; Minkin, V. I.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1989 , vol. 25, # 6 p. 639 - 642
Khimiya Geterotsiklicheskikh Soedinenii, 1989 , vol. 25, # 6 p. 774 - 777
