MARBUN, Mahmuddin; SISMANTO, Sismanto; DE, Zuhrahmi; TARIQUE, Imran; KORAI, Punhoon Khan. Identification of Underground River Flow Using VLF (Very Low Frequency) and Geoelectricity at Karstic Area. International Journal of Hydrological and Environmental for Sustainability, [S. l.], v. 2, n. 3, p. 130–147, 2023. DOI: 10.58524/ijhes.v2i3.332. Disponível em: https://journal.foundae.com/index.php/ijhes/article/view/332. Acesso em: 4 feb. 2026.