R. Pratama, M. Istara, Y. Sukrawan, and T. Permana, “Experimental Evaluation of Exhaust Emission Characteristics and Fuel Consumption of an F8A Engine with HHO Electrolyzer Addition”, AEEJ : Journal of Automotive Engineering and Vocational Education, vol. 7, no. 1, pp. 113-124, Jun. 2026.