参考文献

Eremeev, A. V.; Piskunova, I. P.; El'kinson, R. S. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 8 p. 998 - 1002 Khimiya Geterotsiklicheskikh Soedinenii, 1985 , vol. 21, # 8 p. 1202 - 1206