Saechen, Panjawat, and Thitirat Siriborvornratanakul. “Oil Palm Fresh Fruit Bunch Ripeness Classification by Deep Learning”. Science and Engineering Connect 46, no. 1 (March 31, 2023): 81–104. accessed June 30, 2025. https://ph04.tci-thaijo.org/index.php/SEC/article/view/10165.