参考文献

Moskalev, N. V.; Sirotkina, E. E. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 11 p. 1192 - 1195 Khimiya Geterotsiklicheskikh Soedinenii, 1987 , # 11 p. 1492 - 1495