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参考文献
Kotlyar, S. A.; Kamalov, G. L. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1981 , vol. 17, # 2 p. 118 - 119 Khimiya Geterotsiklicheskikh Soedinenii, 1981 , vol. 17, # 2 p. 174 - 175
Kotlyar, S. A.; Kamalov, G. L. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1981 , vol. 17, # 2 p. 118 - 119 Khimiya Geterotsiklicheskikh Soedinenii, 1981 , vol. 17, # 2 p. 174 - 175