Noor Asnan, Muhammad, Rusandi Noor, and Rafidah Azzahra. “Utilization of Styrofoam-Matrix for Coarse Aggregate to Produce Lightweight Concrete”. International Journal of Engineering and Technology 8, no. 1.1 (January 24, 2019): 207–212. Accessed August 17, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/24661.