参考文献

Skul'ski, L.; Kuyava, A.; Vrochin'ski, P. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1989 , vol. 25, # 2 p. 205 - 208 Khimiya Geterotsiklicheskikh Soedinenii, 1989 , # 2 p. 249 - 252