Wójcik, Gustaw, et al. “Diagnostyka I Leczenie Zachowawcze łokcia Tenisisty = Diagnosis and Conservative Treatment of Tennis Elbow”. Journal of Education, Health and Sport, vol. 6, no. 11, Feb. 2017, pp. 98-107, https://apcz.umk.pl/JEHS/article/view/3969.