Di Bitonto, Pierpaolo, Maria Laterza, Teresa Roselli, and Veronica Rossano. “A Recommendation Method for E-Learning Environments: The Rule-Based Technique”. Journal of e-Learning and Knowledge Society 6, no. 3 (September 29, 2010). Accessed April 16, 2024. https://www.je-lks.org/ojs/index.php/Je-LKS_EN/article/view/442.