Istana, Budi, Indra Hasan, and Kuntang Winangun. “Influence of Fiber Content and Applied Load on the Wear Mechanisms of Oil Palm Frond fiber/Phenol-Formaldehyde Composites With Functional Fillers”. Journal of Engineering Researcher and Lecturer 4, no. 3 (November 6, 2025): 136–145. Accessed April 18, 2026. https://jerel.rlsociety.org/index.php/jerel/article/view/198.