Su, Chien-Yuan, Jiawei Chang, Tikai Chiu, and Tungcheng Hsieh. “A Cluster-Based Personalized Item Recommended Approach on the Educational Assessment System”. International Journal of Emerging Technologies in Learning (iJET) 10, no. 5 (November 13, 2015): pp. 52–58. Accessed December 4, 2024. https://online-journals.org/index.php/i-jet/article/view/4807.