Chemistry of iminofurans: V. Synthesis, structure, and cyclization of 4-r-4-oxo-2-[2-(2-oxo-1,2-diphenylethylidene)hydrazino]but-2-enoic acids / O. A. Komarova [и др.] // Russian Journal of Organic Chemistry. - 2010. - Т. 46, № 2. - С. 236-240 Доп.точки доступа: Komarova, O. A.; Igidov, N. M.; Rubtsov, A. E.; Zalesov, V. V.; Makarov, A. S.; Toksarova, Yu. S.