Muntia H, Bambang Sudarmanta, 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. jcm [Internet]. 2026Oct.15 [cited 2026Oct.20];7(3):83-9. Available from: https://ojs.cahayamandalika.com/index.php/jcm/article/view/6522