参考文献

Likhterov, V. R.; Etlis, V. S. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 9 p. 982 - 984 Khimiya Geterotsiklicheskikh Soedinenii, 1985 , vol. 21, # 9 p. 1182 - 1184