参考文献
Lakhvich, F. A.; Khripach, V. A.; Pyrko, A. N.; Antonevich, I. P.; Yankova, T. V.; et al.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1988 , p. 800 - 804
Khimiya Geterotsiklicheskikh Soedinenii, 1988 , vol. 24, # 7 p. 972 - 976