Mrozkowiak, Mirosław, and Marek Sokołowski. “Relationships Between Characteristics of the Spine-Pelvis System and Feet in Boys Aged 7 to 13 Years”. Journal of Education, Health and Sport 6, no. 5 (May 14, 2016): 177–192. Accessed July 18, 2024. https://apcz.umk.pl/JEHS/article/view/3520.