参考文献

Ioffe,B.V.; Tsibul'skii,V.V. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1970 , vol. 6, p. 1166 - 1171 Khimiya Geterotsiklicheskikh Soedinenii, 1970 , vol. 6, p. 1249 - 1254