Arsi, Sefti Dini, Muhammad Farid, and Refrizon Refrizon. 2025. “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 17 (1):41-52. https://doi.org/10.25077/jif.17.1.41-52.2025.