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参考文献
Shvekhgeimer,G.A.; Mikheichev,G.A. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1974 , vol. 10, p. 712 - 714 Khimiya Geterotsiklicheskikh Soedinenii, 1974 , vol. 10, # 6 p. 820 - 822
Shvekhgeimer,G.A.; Mikheichev,G.A. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1974 , vol. 10, p. 712 - 714 Khimiya Geterotsiklicheskikh Soedinenii, 1974 , vol. 10, # 6 p. 820 - 822