参考文献
Savel'ev, V. L.; Artamonova, O. S.; Troitskaya, V. S.; Shaviryna, V. V.; Afanas'eva, T. G.; Zagorevskii, V. A.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1982 , vol. 18, # 7 p. 676 - 679
Khimiya Geterotsiklicheskikh Soedinenii, 1982 , # 7 p. 896 - 899