Widhiansyah, Dwiky Agam, and Widjanarko. “PENGARUH PERLAKUAN ALKALI DAN FRAKSI VOLUME TERHADAP KEKUATAN IMPACT KOMPOSIT SERAT SABUT KELAPA (COCOFIBER) - EPOXY: EFFECT OF ALKALI TREATMENT AND VOLUME FRACTION ON THE IMPACT STRENGTH OF COCONUT FIBER COMPOSITE (COCOFIBER) – EPOXY”. Jurnal Teknik Mesin 4, no. 1 (May 30, 2025): 359 –. Accessed September 10, 2025. http://114.6.41.75/index.php/j-meeg/article/view/5688.