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参考文献
Gordeev, E. N.; Buyanov, V. N.; Zhigachev, V. E. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1992 , vol. 28, # 1 p. 40 - 42 Khimiya Geterotsiklicheskikh Soedinenii, 1992 , # 1 p. 46 - 48
Gordeev, E. N.; Buyanov, V. N.; Zhigachev, V. E. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1992 , vol. 28, # 1 p. 40 - 42 Khimiya Geterotsiklicheskikh Soedinenii, 1992 , # 1 p. 46 - 48