Utoyo, Ega Bonansyah, et al. “Distribution Pattern of ELF Field Exposure Electricity Distribution Substation Portal Pole Type 20 KV Medium Voltage Network”. Jurnal Pendidikan Fisika Dan Teknologi, vol. 10, no. `1, June 2024, pp. 71-84, doi:10.29303/jpft.v10i`1.6783.