Idczak-Paceś, E., A. Kabat, A. Krzywik, and I. Nowakowska. “Depressive Symptoms in Elderly People Participating in University of the Third Age and Residents of Nursing Homes: The Role of Optimism and Acceptance of Passing”. Research on Ageing and Social Policy, vol. 9, no. 2, July 2021, pp. 105-32, doi:10.17583/rasp.2021.5782.