Rasib AW, Mohd Ali H, Alvin L, et al. Upscaling Aboveground Biomass Estimation at Low-land Royal Belum Forest Reserve Using Unmanned Aerial Vehicle Image. IJIE. 2018;10(4). Accessed March 12, 2026. https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/2001