Karmiathi, N.M. and Puja Yoga, P.M. 2023. The grounding resistance improvement of distribution substation using multiple rods and wood charcoal as soil treatment. Matrix : Jurnal Manajemen Teknologi dan Informatika. 13, 1 (Mar. 2023), 33–41. DOI:https://doi.org/10.31940/matrix.v13i1.33-41.