Arifin, I. Z., Wirawan Wirawan, and Hari Rarindo. “The Effect of Sodium Hydroxide Absorbent on The Exhaust Emissions From Internal Combustion Engine:”. Logic : Jurnal Rancang Bangun Dan Teknologi, vol. 22, no. 1, Mar. 2022, pp. 27-34, doi:10.31940/logic.v22i1.27-34.