参考文献

Tkach, I. I.; Luk'yanets, E. A. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1992 , vol. 28, # 8 p. 881 - 883 Khimiya Geterotsiklicheskikh Soedinenii, 1992 , # 8 p. 1053 - 1055