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参考文献
Krapivin, G. D.; Usova, E. B.; Kul'nevich, V. G. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 2 p. 230 Khimiya Geterotsiklicheskikh Soedinenii, 1985 , vol. 21, # 2 p. 272
Krapivin, G. D.; Usova, E. B.; Kul'nevich, V. G. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 2 p. 230 Khimiya Geterotsiklicheskikh Soedinenii, 1985 , vol. 21, # 2 p. 272