Strojek, Katarzyna, et al. “Etiologia I Patomechanizm Uszkodzenia ścięgna Achillesa = The Etiology and Patomechanizm Damage to the Achilles Tendon”. Journal of Education, Health and Sport, vol. 6, no. 11, Feb. 2017, pp. 147-60, https://apcz.umk.pl/JEHS/article/view/3976.