Azkiyah, F., Rudyardjo, M.Si., D. D. I. and Ady, J. (2021) “Optimization of Additional Composition Variations ZnO Nanoparticles on The Characteristics of Porous Hydroxypatite as Bone Filler”, Indonesian Applied Physics Letters, 2(2), pp. 40–48. doi: 10.20473/iapl.v2i2.31699.