Sari, Nurfitri Rahmi, et al. “Synthesis and Characterization of Hydroxyapatite Derived from Pleco Fish (Hypostomus Plecostomus) Bone Waste via Calcination and Ball Milling for Biomedical Applications”. METAL: Jurnal Sistem Mekanik Dan Termal, vol. 9, no. 1, Apr. 2025, pp. 14-20, doi:10.25077/metal.9.1.14-20.2025.