Zubkova, K., and O. Stoianova. “Influence of Preliminary Processing of Vegetables on Increasing the Content of γ­amino­butyric Acid in Juices”. Eastern-European Journal of Enterprise Technologies, vol. 1, no. 11 (103), Feb. 2020, pp. 34-43, doi:10.15587/1729-4061.2020.192580.