参考文献

Semenov, V. P.; Studenikov, A. N. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1980 , vol. 16, # 7 p. 754 - 757 Khimiya Geterotsiklicheskikh Soedinenii, 1980 , # 7 p. 972 - 975