PÓŁTORANOS, Martyna and PERKOWSKI, Radosław. Assessment of physical fitness of young rugby players of the club „MKS Ogniwo Sopot" after a year of systematic training. Journal of Education, Health and Sport. Online. 6 June 2024. Vol. 61, p. 51862. [Accessed 30 June 2024]. DOI 10.12775/JEHS.2024.61.51862.