参考文献

Voronkov,M.G.; Romadan,Yu.P. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1966 , vol. 2, p. 671 - 681 Khimiya Geterotsiklicheskikh Soedinenii, 1966 , vol. 2, # 6 p. 879 - 891