A. . Kulik, N. . Kajka, A. . Banakiewicz, and E. . Frańczyk, “Risk factors of Secondary Traumatic Stress in psychotherapists studied during the COVID-19”, Curr Probl Psychiatry, vol. 24, pp. 125–133, May 2023, doi: 10.12923/2353-8627/2023-0012.