HORČÍK, R.; FIŠER, D.; TORRALBA, Álvaro. Homomorphisms of Lifted Planning Tasks: The Case for Delete-Free Relaxation Heuristics. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 36, n. 9, p. 9767-9775, 2022. DOI: 10.1609/aaai.v36i9.21212. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/21212. Acesso em: 13 apr. 2024.