RAJAGOPAL, raji; BASKARAN, S. Ontology Based E-Learning Systems in the Semantic Web. International Journal of Computer (IJC), [S. l.], v. 6, n. 1, p. 1–8, 2012. Disponível em: https://www.ijcjournal.org/index.php/InternationalJournalOfComputer/article/view/77. Acesso em: 25 apr. 2024.