Bourkoukou, Outmane, and Essaid El Bachari. “A Big-Data Oriented Recommendation Method in E-Learning Environment”. International Journal of Emerging Technologies in Learning (iJET) 17, no. 10 (May 24, 2022): pp. 74–84. Accessed August 20, 2022. https://online-journals.org/index.php/i-jet/article/view/27861.