Tandanu, Y. A., D. J. D. H. Santjojo, and M. Masruroh. “ANALYSIS OF HYDROXYAPATITE/GELATINE COMPOSITION ON THE FILAMENT FORMATION USING PISTON EXTRUSION METHOD”. Indonesian Physical Review, vol. 7, no. 1, Jan. 2024, pp. 153-65, doi:10.29303/ipr.v7i1.273.