参考文献

Magedov, I. V.; Smushkevich, Yu. I. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 7 p. 741 - 744 Khimiya Geterotsiklicheskikh Soedinenii, 1991 , # 7 p. 933 - 936