参考文献

Grinev, A. N.; Mikhailova, I. N. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1980 , vol. 16, # 6 p. 578 - 580 Khimiya Geterotsiklicheskikh Soedinenii, 1980 , # 6 p. 753 - 754