BIELIKOVÁ, M.; NÁVRAT, P. A Prolog Technique of Implementing Search of A/O Graphs with Constraints. COMPUTING AND INFORMATICS, [S. l.], v. 16, n. 4, p. 377–400, 2012. Disponível em: https://www.cai.sk/ojs/index.php/cai/article/view/654. Acesso em: 3 may. 2024.