Nizar Ismail, Khairul, Mohd Sobri Idris, Kamarudin Hussin, and Khairun Azizi Mohd Azizli. “The Microstructure of Lightweight Aggregates Made of Pulverised Fuel Ash”. Malaysian Journal of Science 21 (December 26, 2002): 177–179. Accessed November 22, 2024. https://mjs.um.edu.my/index.php/MJS/article/view/8884.