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), 1989 , vol. 25, # 4 p. 428 - 433 Khimiya Geterotsiklicheskikh Soedinenii, 1989 , # 4 p. 514 - 519