Abd Aljabbar, S., S.S. Rahmatallah, A. Al- Sarraf, Z. Shehap, and H. I. Dumbous. 2017. “Preparation of Fine Hydroxyapatite (HA) Powder And Its Characterization As Ceramic Biomaterial”. Ibn AL-Haitham Journal For Pure and Applied Sciences 25 (3): 127-32. https://jih.uobaghdad.edu.iq/index.php/j/article/view/575.