N. Yusoff and Norhasikin Ismail, “Study on the Characterization of Fillers and Different Rubber Crumb Ratio for Car’s Bumper”, peat, vol. 6, no. 2, pp. 260–267, Oct. 2025, Accessed: Aug. 15, 2026. [Online]. Available: https://periodical.uthm.edu.my/index.php/peat/article/view/21079