Ko, Tin Ni Ni, and Dr. Nilar Aye. “Experimental Research on Natural Pozzolan As Cement Replacement”. American Scientific Research Journal for Engineering, Technology, and Sciences 44, no. 1 (July 19, 2018): 290–301. Accessed May 5, 2024. https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/4246.