参考文献

Shavyrina,V.V.; Zhuravlev,S.V. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1972 , vol. 8, p. 36 - 38 Khimiya Geterotsiklicheskikh Soedinenii, 1972 , vol. 8, # 1 p. 38 - 40