Abubakar, Abdulhameed Umar, and Khairul Salleh Baharudin. “Properties of Concrete Using Tanjung Bin Power Plant Coal Bottom Ash and Fly Ash”. International Journal of Sustainable Construction Engineering and Technology 3, no. 2 (December 5, 2012): 56–69. Accessed March 11, 2026. https://penerbit.uthm.edu.my/ojs/index.php/IJSCET/article/view/518.