Noor Asnan, Muhammad, Rusandi Noor, and Rafidah Azzahra. “Utilization of Styrofoam-Matrix for Coarse Aggregate to Produce Lightweight Concrete”. International Journal of Engineering & Technology 8, no. 1.1 (January 24, 2019): 207–212. Accessed July 18, 2024. https://sciencepubco.com/index.php/ijet/article/view/24661.