参考文献

Spitsyn, N. V.; Kochkanyan, R. O. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 8 p. 949 Khimiya Geterotsiklicheskikh Soedinenii, 1985 , vol. 21, # 8 p. 1131 - 1132