STEFANONI, G.; MOTIK, B. Answering Conjunctive Queries over EL Knowledge Bases with Transitive and Reflexive Roles. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 29, n. 1, 2015. DOI: 10.1609/aaai.v29i1.9386. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/9386. Acesso em: 18 aug. 2022.