Dębska, Grażyna, Monika Korbel-Pawlas, Maria Zięba, Wioletta Ławska, and Alicja Luberda. 2012. “Quality of Life Vs. Health Behaviours Among Respondents Attending the University of the Third Age (U3A) – Preliminary Study”. Polish Journal of Public Health 122 (1): 48-54. https://czasopisma.umlub.pl/pjph/article/view/1439.