STAAB, S.; MAEDCHE, A. Knowledge Portals: Ontologies at Work. AI Magazine, [S. l.], v. 22, n. 2, p. 63, 2001. DOI: 10.1609/aimag.v22i2.1561. Disponível em: https://ojs.aaai.org/aimagazine/index.php/aimagazine/article/view/1561. Acesso em: 17 jul. 2024.