STURTEVANT, N.; FELNER, A. A Brief History and Recent Achievements in Bidirectional Search. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 32, n. 1, 2018. DOI: 10.1609/aaai.v32i1.12218. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/12218. Acesso em: 25 mar. 2023.