参考文献

Gromov, S. P.; Bkhaumik, M. M.; Bundel', Yu. G. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 4 p. 435 - 437 Khimiya Geterotsiklicheskikh Soedinenii, 1985 , vol. 21, # 4 p. 522 - 524