参考文献

Gevorkyan, A. A.; Kazaryan, P. I.; Avakyan, S. V. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1988 , vol. 24, p. 110 Khimiya Geterotsiklicheskikh Soedinenii, 1988 , vol. 24, # 1 p. 131