参考文献

Korostova, S. E.; Shevchenko, S. G. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1990 , vol. 26, # 12 p. 1412 Khimiya Geterotsiklicheskikh Soedinenii, 1990 , # 12 p. 1695 - 1696