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参考文献
Gall', A. A.; Trachum, A. S.; Romantsev, V. A.; Shishkin, G. V. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 6 p. 626 - 630 Khimiya Geterotsiklicheskikh Soedinenii, 1991 , vol. 27, # 6 p. 798 - 803
Gall', A. A.; Trachum, A. S.; Romantsev, V. A.; Shishkin, G. V. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 6 p. 626 - 630 Khimiya Geterotsiklicheskikh Soedinenii, 1991 , vol. 27, # 6 p. 798 - 803