Mrozkowiak, Mirosław, Mariusz Posłuszny, Marek Sokołowski, and Alicja Kaiser. 2018. “The Incidence of Significant Relationships Between Selected Parameters of Feet and Parameters of Trunk in Adolescents Aged 14-18 Years”. Journal of Education, Health and Sport 8 (2):305-19. https://apcz.umk.pl/JEHS/article/view/5331.