参考文献

Shvekhgeimer, M.-G. A.; Kobrakov, K. I.; Sychev, S. S.; Promonenkov, V. K. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 8 p. 865 - 867 Khimiya Geterotsiklicheskikh Soedinenii, 1987 , # 8 p. 1082 - 1084