PUJSZO, Ryszard, ZAJĄC, Magdalena and PRZYBYLSKI, Grzegorz. The efficiency of the respiratory system of men at risk of social exclusion. Journal of Education, Health and Sport. Online. 27 December 2021. Vol. 11, no. 12, pp. 327-336. [Accessed 18 July 2024]. DOI 10.12775/JEHS.2021.11.12.026.