Waldon, K., K. Szczypiór-Piasecka, A. Mińko, K. . Antczak, and A. Orłowska. “Evaluation of the Functional Condition of Patients Qualified for Knee Alloplastics”. Journal of Education, Health and Sport, vol. 11, no. 9, Sept. 2021, pp. 571-9, doi:10.12775/JEHS.2021.11.09.074.