Podhorecka, Marta, Anna Turska, Dominika Gębka, Radosław Perkowski, Joanna Perkowska, Alina Jaroch, Klara Nicpoń-Nożewska, Michalina Radzińska, Anna Grzanka-Tykwińska, Walery Zukow, and Kornelia Kędziora-Kornatowska. 2017. “Cognitive Disorders and Fitness of the Elderly in Residential Homes in Bydgoszcz”. Journal of Education, Health and Sport 7 (12):306-21. https://apcz.umk.pl/JEHS/article/view/5180.