Michal Sojka and Zenon Pawlak. Study on Natural Joints: Hydrophilic and Negatively Charged Cartilage Surface effect Friction. NVST-V1 [Internet]. 2021 Aug. 11 [cited 2026 Jun. 4];:141-6. Available from: https://stm.bookpi.org/NVST-V1/article/view/3211