G. Opeña, Harvey Jake, and John Paul T. Yusiong. “Automated Tomato Maturity Grading Using ABC-Trained Artificial Neural Networks”. Malaysian Journal of Computer Science 30, no. 1 (March 1, 2017): 12–26. Accessed April 20, 2024. https://ejournal.um.edu.my/index.php/MJCS/article/view/7023.