参考文献
Kovalev, E.G.; Rusinov, G.L; Aleksandrov, G.G.; Anufriev, V.A.; Sidorov, E.O.; Chernyshev, A.I.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 11 p. 1247 - 1252
Khimiya Geterotsiklicheskikh Soedinenii, 1991 , # 11 p. 1545 - 1551