Rosma, Iswadi Hasyim, et al. “Utilization of Activated Carbon Derived from Oil Palm Empty Fruit Bunches As an Alternative for Improving Grounding Resistance Values”. JTEIN: Jurnal Teknik Elektro Indonesia, vol. 7, no. 2, Oct. 2026, pp. 271-83, doi:10.24036/jtein.v7i2.853.