ELLMAUTHALER, S.; KRÖTZSCH, M.; MENNICKE, S. Answering Queries with Negation over Existential Rules. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 36, n. 5, p. 5626-5633, 2022. DOI: 10.1609/aaai.v36i5.20503. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/20503. Acesso em: 3 mar. 2024.