Irwan, Audra Irlyssa, Noor Halizah Abdullah, and Saidatul Nadirah Amir. 2026. “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 24 (44). https://doi.org/10.21837/pm.v24i44.2313.