H. D. Nguyen, D. A. Tran, H. P. Do, and V. T. Pham, “Design an Intelligent System to automatically Tutor the Method for Solving Problems ”, ijie, vol. 12, no. 7, pp. 211–223, Oct. 2020, Accessed: Jul. 23, 2024. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/7276