参考文献
Skrastin'sh, I. P.; Kastron, V. V.; Dubur, G. Ya.; Mazheika, I. B.; Kadysh, V. P.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 9 p. 981 - 985
Khimiya Geterotsiklicheskikh Soedinenii, 1987 , # 9 p. 1227 - 1232
