Ahmad, Nazli, Zainal Arif, Taufan Arif Adlie, and Iskandar. “Impact Characterization of Safety Helmets Made From Areca Fiber-Reinforced Polyester Composites”. JURUTERA - Jurnal Umum Teknik Terapan 11, no. 02 (December 30, 2024): 108-115. Accessed November 7, 2026. https://ejurnalunsam.id/index.php/jurutera/article/view/10819.