“SOME CHEMICAL TRANSFORMATIONS OF 3-FUNCTIONALLY-4,5-DIPHENYL-$\Delta^3$-BUTENOLIDЕS”. Proceedings of the YSU B: Chemical and Biological Sciences, vol. 46, no. 2 (228), May 2012, pp. 14-18, https://doi.org/10.46991/PYSUB.2012.46.2.014.