S. Florek, K. Meca, Łukasz Czogalik, M. Piegza, P. Dębski, and R. Pudlo, “Impact of the COVID-19 pandemic on the mental state of Polish students”, Curr Probl Psychiatry, vol. 25, pp. 39–50, Jan. 2025, doi: 10.12923/2353-8627/2024-0005.