参考文献
Nasakin, O.E.; Lyshchikov, A.N.; Lukin, P.M.; Bulai, A.Kh.; Tafeenko, V.A.; Sharbatyan, P.A.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 11 p. 1212 - 1217
Khimiya Geterotsiklicheskikh Soedinenii, 1991 , # 11 p. 1502 - 1507