Muntia, Hermawan, Bambang Sudarmanta, and Jajang Amir Hidayat. “The Analysis of Hydrogen Gas Addition in Biodiesel Dual-Fuel System of the Efficiency and Operational Characteristics of Pro Quip u.s.A Qdx-400 Diesel Engine”. Jurnal Cahaya Mandalika ISSN 2721-4796 (online) 7, no. 3 (October 15, 2026): 83-89. Accessed October 20, 2026. https://ojs.cahayamandalika.com/index.php/jcm/article/view/6522.