参考文献

Lyukmanov, N. F.; Kovshev, E. I. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 11 p. 1215 - 1218 Khimiya Geterotsiklicheskikh Soedinenii, 1985 , vol. 21, # 11 p. 1477 - 1480