ETTAIB, KHALID; KHALDI, Mohamed. Contributions of Ontology’s and Utilities of Interoperability in E_Learning Systems. RA Journal Of Applied Research, [S. l.], v. 4, n. 12, p. 2155–2159, 2018. DOI: 10.31142/rajar/v4i12.03. Disponível em: http://rajournals.in/index.php/rajar/article/view/457. Acesso em: 22 nov. 2024.