BANNISTER, Michael; EPPSTEIN, David; SIMONS, Joseph. Inapproximability of Orthogonal Compaction. Journal of Graph Algorithms and Applications, [S. l.], v. 16, n. 3, p. 651–673, 2012. DOI: 10.7155/jgaa.00263. Disponível em: https://jgaa.info/index.php/jgaa/article/view/paper263. Acesso em: 30 jun. 2024.