MCHEDLIDZE, Tamara; SYMVONIS, Antonios. Crossing-Optimal Acyclic HP-Completion for Outerplanar st-Digraphs. Journal of Graph Algorithms and Applications, [S. l.], v. 15, n. 3, p. 373–415, 2011. DOI: 10.7155/jgaa.00231. Disponível em: https://jgaa.info/index.php/jgaa/article/view/paper231. Acesso em: 30 jun. 2024.