Farid, S.B. H., Ayser J. Ibrahim, and Hanan K. H. Al-Mayaly. 2017. “Physical & Mechanical Properties of Chemical Resistance Ceramic Tiles and Mortar to Alkali Solution”. Ibn AL-Haitham Journal For Pure and Applied Sciences 22 (4). https://jih.uobaghdad.edu.iq/index.php/j/article/view/1137.