“ How to Make and Characterize Hydroxyapatite from Eggshell Using the Hydrothermal Method: Potential Insights for Drug Delivery System”. Indonesian Journal of Science and Technology 8, no. 3 (November 20, 2023): 469–486. Accessed August 16, 2025. https://ejournal.kjpupi.id/index.php/ijost/article/view/30.