S, S.; EDAHWATI, L.; WAHYUDI, M. R. A. .; RAHMAH, N. A. Optimization of Nano-Hydroxyapatite Production from Limestone with Effect of Gelatin Concentration and pH in Sol-Gel Synthesis. International Journal of Eco-Innovation in Science and Engineering (IJEISE), [S. l.], v. 5, n. 2, p. 42–49, 2024. DOI: 10.33005/ijeise.v5i2.137. Disponível em: https://ijeise.upnjatim.ac.id/index.php/ijeise/article/view/137. Acesso em: 5 dec. 2024.