FORTUNA, Małgorzata, SZCZUROWSKI, Jacek, ZABŁOCKI, Tomasz, PAŁASZ, Dagmara and DEMCZYSZAK, Iwona. Estimation of evaluation some spirometric’s parameters of football players during preparation period. Journal of Education, Health and Sport. Online. 24 May 2018. Vol. 8, no. 6, pp. 69-79. [Accessed 30 June 2024].