Ong ST, Giap GE, Rudiyanto, Mohammad Fadhli Ahmad, Abdul Aziz R. Estimating Unsaturated Hydraulic Conductivity in Unsaturated Soil Using Soil Moisture Sensors. IJIE. 2023;15(1):265-272. Accessed August 7, 2026. https://journal.uthm.edu.my/index.php/ijie/article/view/8534