Zhao, Qiang, Le Yu, Zhenrong Du, and Kasturi Kanniah. “Towards an Annually Updated Oil Palm Age Database (OPAD) With Multimodal Remote Sensing Features: Design and Preliminary Result”. Journal of Advanced Geospatial Science & Technology 4, no. 1 (March 31, 2024): 16–42. Accessed May 20, 2024. https://jagst.utm.my/index.php/jagst/article/view/85.