Aliasghar Behnamghader, Hoda Salemi, Abdollah Afshar, and Mahmood Ardeshir, “Effect of Alkaline-Acid Treatment on the Biomimetic Formation of Calcium Phosphate Layers on Titanium Substrates: An In Vitro Study: Alkaline-acid treatment on calcium phosphate layers”, Iran J Pharm Sci, vol. 4, no. 2, pp. 149–156, Apr. 2008.