A Karim, M.N, M.A Jamlos, S.Z Ibrahim, M.F Jamlos, and Y.S Lee. “Geological Effect on GPR System Due to Soil Properties in Malaysia”. International Journal of Integrated Engineering 11, no. 3 (September 3, 2019). Accessed July 18, 2024. https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/4722.