ARSI, Sefti Dini; FARID, Muhammad; REFRIZON, Refrizon. RETRACTED: Identification of the Presence of Pumice Stone Based on Georadar Data and Geoelectric Resistivity Data in Ampenan District and Sekarbela District, Mataram City. JURNAL ILMU FISIKA | UNIVERSITAS ANDALAS, [S. l.], v. 17, n. 1, p. 41–52, 2025. DOI: 10.25077/jif.17.1.41-52.2025. Disponível em: https://jif.fmipa.unand.ac.id/index.php/jif/article/view/663. Acesso em: 4 mar. 2026.