2023. Interference Analysis of Postpaid kWh Meters According to Standard Operational Procedures at PT. PLN Ulp Helvetia Medan Indonesia: Analisis Gangguan Pada kWh Meter Pasca Bayar Menurut Standar Operasional Prosedur di PT. PLN Ulp Helvetia Medan Indonesia. Prevenire: Journal of Multidisciplinary Science. 2, 1 (Feb. 2023), 49–56. DOI:https://doi.org/10.58330/prevenire.v2i1.93.