Ilim, L. Hidayah, D. Yuliyanda, K. Delilawati Pandiangan, and W. Simanjuntak, “Sodium Methoxide Catalyzed Preparation of Nitrogen Compounds from Palm Oil Methyl Esters as Corrosion Inhibitor”, sci. technol. indones., vol. 9, no. 1, pp. 113–119, Jan. 2024.