参考文献

Gromov, S. P.; Bkhaumik, M. M.; Bundel, Yu. G. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 4 p. 406 - 414 Khimiya Geterotsiklicheskikh Soedinenii, 1987 , # 4 p. 488 - 496