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参考文献
Tokmakov, G.P.; Grandberg, I.I. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1980 , vol. 16, # 3 p. 244 - 247 Khimiya Geterotsiklicheskikh Soedinenii, 1980 , vol. 16, # 3 p. 331 - 334
Tokmakov, G.P.; Grandberg, I.I. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1980 , vol. 16, # 3 p. 244 - 247 Khimiya Geterotsiklicheskikh Soedinenii, 1980 , vol. 16, # 3 p. 331 - 334