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参考文献
Orlov, V. D.; Insuasti, B.; Kolos, N. N. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 6 p. 685 - 687 Khimiya Geterotsiklicheskikh Soedinenii, 1987 , vol. 23, # 6 p. 830 - 832
Orlov, V. D.; Insuasti, B.; Kolos, N. N. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 6 p. 685 - 687 Khimiya Geterotsiklicheskikh Soedinenii, 1987 , vol. 23, # 6 p. 830 - 832