Kowalska, J. E., Makarczuk, A., & Zdebska-Biziewska, H. (2016). The reasons for undertaking physical activity by seniors from małopolska voivodship (based on Polsenior study). Exlibris Social Gerontology Journal, 11(1), 131–146. Retrieved from https://ojs.wsb.edu.pl/index.php/bgs/article/view/713