GASPERS, Serge; KOIVISTO, Mikko; LIEDLOFF, Mathieu; ORDYNIAK, Sebastian; SZEIDER, Stefan. On Finding Optimal Polytrees. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 26, n. 1, p. 750–756, 2021. DOI: 10.1609/aaai.v26i1.8217. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/8217. Acesso em: 10 may. 2026.