N. A. Emran and Mohd Zaky Noh, “Effect of Three Tier Treatments on Palm Oil Fuel Ash to the Properties of Ceramic Body”, EKST, vol. 4, no. 2, pp. 488–498, Dec. 2024, Accessed: Apr. 09, 2026. [Online]. Available: https://publisher.uthm.edu.my/periodicals/index.php/ekst/article/view/14350