Abd el-raheem, Ahmed H., Sohir Negm, Ahmed M.Tahwia, and Basma A. Abd el-rahman. “Effect of Using Hybrid Nano-Particles on Physical and Mechanical Properties of Cement Mortar”. American Scientific Research Journal for Engineering, Technology, and Sciences 26, no. 2 (November 2, 2016): 118–139. Accessed April 29, 2024. https://www.asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/2326.