G. Kotov, P. Ermencheva, R. Shumnalieva, G. P. Georgiev, A. Zaralieva, and S. Monov, “Autologous conditioned serum in the therapy of obesity-related knee osteoarthritis”, AMB, vol. 53, no. 2, pp. 29–35, Jun. 2026, doi: 10.2478/AMB-2026-0056.