Alaud, Salhin. “Comparative Study Based on the Utilization of Polystyrene Foam and High-Density Polyethylene in Lightweight Concrete”. Sharwes Scientific Journal , no. 2 (June 15, 2025): 135–127. Accessed June 18, 2026. https://journ.nu.edu.ly/index.php/sharws/article/view/162.