参考文献

Poritere, S. E.; Paegle, R. A.; Lidak, M. Yu. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1982 , vol. 18, # 4 p. 415 - 417 Khimiya Geterotsiklicheskikh Soedinenii, 1982 , vol. 18, # 4 p. 539 - 541