R. H. M. Rum, A. F. Norhalim, Z. M. Jaini, N. H. Abd Ghafar, and M. Kowlowski, “Density and Strength of Foamed Concrete: The Influence on Dynamic Characteristics of Lightweight Profiled Composite Slabs”, IJIE, vol. 11, no. 6, pp. 285–295, Sep. 2019, Accessed: Apr. 08, 2026. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/4952