Plytus, Sviatoslav, and Volodymyr Lushchak. “Dietary Correction of Stress- and Trauma-Related Mental Disorders: Kefir As a Psychobiotic Agent”. Journal of Vasyl Stefanyk Precarpathian National University. Biology 12 (December 15, 2025): 168–180. Accessed December 23, 2025. https://journals.pnu.edu.ua/index.php/jpnubio/article/view/10042.