Grigoryan, G.S., et al. “OBTAINING NONGLYCERIDE OILS BY ESTERIFICATION OF ERYTHRITOL, 1,2,3-BUTANETRIOL AND 1,2,4-BUTANETRIOL BY CARBOXYLIC ACIDS OF SUNFLOWER, OLIVE AND CORN OILS”. Proceedings of the YSU B: Chemical and Biological Sciences, vol. 53, no. 1 (248), Apr. 2020, pp. 10-17, doi:10.46991/PYSU:B/2019.53.1.010.