IRWAN, A. I.; ABDULLAH, N. H.; AMIR, S. N. GEOTECHNICAL RISK ASSESSMENT OF SUBSURFACE CAVITIES IN LIMESTONE FORMATIONS USING 2D ELECTRICAL RESISTIVITY TOMOGRAPHY (ERT) FOR INFRASTRUCTURE DEVELOPMENT IN KAMPAR, PERAK DARUL RIDZUAN, MALAYSIA. PLANNING MALAYSIA, [S. l.], v. 24, n. 44, 2026. DOI: 10.21837/pm.v24i44.2313. Disponível em: https://www.planningmalaysia.org/index.php/pmj/article/view/2313. Acesso em: 18 oct. 2026.