Agbonifo, Oluwatoyin Catherine, and Motunrayo Akinsete. “Development of an Ontology-Based Personalised E-Learning Recommender System”. International Journal of Computer (IJC) 38, no. 1 (June 6, 2020): 102-112. Accessed February 27, 2021. https://ijcjournal.org/index.php/InternationalJournalOfComputer/article/view/1566.