参考文献
Koikov, L. N.; Terent'ev, P. B.; Gloriozov, I. P.; Torocheshnikov, V. N.; Baidin, V. N.; Bundel', Yu. G.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1983 , vol. 19, # 5 p. 518 - 524
Khimiya Geterotsiklicheskikh Soedinenii, 1983 , vol. 19, # 5 p. 643 - 650