غنام ن. ., خليل ع. ., and أسعد م. . “Study the Optimal Conditions for the Preparation of Hydroxyapatite in the Three-Component System: Ca (NO3)2- (NH4)2HPO4- NH3.H2O to Be Used Medically”. Tishreen University Journal -Basic Sciences Series, vol. 39, no. 6, July 2022, https://journal.tishreen.edu.sy/index.php/bassnc/article/view/13181.