参考文献

Churkin, Yu. D.; Panfilova, L. D.; Shashkov, A. S.; Burshtein, K. Ya. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1981 , vol. 17, # 6 p. 549 - 552 Khimiya Geterotsiklicheskikh Soedinenii, 1981 , # 6 p. 753 - 757