1.
RZEPKA, Alicja, RADZISZEWSKI, Krzysztof, KĘDZIORA-KORNATOWSKA, Kornelia and DZIERŻANOWSKI, Maciej. Physical activity as a remedy for "cheerful" aging which prevents from chronic diseases. Journal of Education, Health and Sport. Online. 31 December 2016. Vol. 6, no. 13, pp. 183-199. [Accessed 27 July 2024].