参考文献

Khlebnikov, A. F.; Novikov, M. S.; Kostikov, R. R. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 10 p. 1070 - 1076 Khimiya Geterotsiklicheskikh Soedinenii, 1987 , # 10 p. 1336 - 1342