N. Ismail, M. F. Arshad, H. M. Saman, and C. W. Kang, “Water Treatment Sludge Stabilizer Binder by Waste Paper Sludge Ash for Solidification/Stabilisation Technique”, IJIE, vol. 11, no. 1, May 2019, Accessed: Apr. 08, 2026. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/2460