参考文献

Musorin, G. K.; Amosova, S. V.; Kalabin, G. A. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1989 , vol. 25, # 4 p. 401 - 403 Khimiya Geterotsiklicheskikh Soedinenii, 1989 , # 4 p. 483 - 484