Arsi, S. D., Farid, M., & Refrizon, R. (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