Fedorovska, M., I. Yarema, N. Polovko, and I. Ivanchuk. “Substantiation of Technological Parameters of the Oil Extract Obtained from Urtica Dioica Roots Based on the Yield Determination of Phytosterols Using Capillary Gas Chromatography Method”. ScienceRise: Pharmaceutical Science, no. 6 (34), Dec. 2021, pp. 27-36, doi:10.15587/2519-4852.2021.249615.