参考文献

Koren', A. O.; Gaponik, P. N. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1990 , vol. 26, # 12 p. 1366 - 1370 Khimiya Geterotsiklicheskikh Soedinenii, 1990 , # 12 p. 1643 - 1647