Zainudin A, Sia CK, Ong P, Narong OLC, Azlan MA, Lee WK. Performance Properties Optimization of Triaxial Ceramic-Palm Oil Fuel Ash By Employing Taguchi Grey Relational Analysis. ijie. 2019;11(1). Accessed May 3, 2024. https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/3275