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参考文献
Gracheva, I.N.; Tochilkin, A.I. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1980 , vol. 16, # 3 p. 275 - 277 Khimiya Geterotsiklicheskikh Soedinenii, 1980 , vol. 16, # 3 p. 366 - 368
Gracheva, I.N.; Tochilkin, A.I. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1980 , vol. 16, # 3 p. 275 - 277 Khimiya Geterotsiklicheskikh Soedinenii, 1980 , vol. 16, # 3 p. 366 - 368