DEAN, Alice; HUTCHINSON, Joan. Rectangle-visibility Layouts of Unions and Products of Trees. Journal of Graph Algorithms and Applications, [S. l.], v. 2, n. 8, p. 1–21, 1998. DOI: 10.7155/jgaa.00011. Disponível em: https://jgaa-v4.cs.brown.edu/index.php/jgaa/article/view/paper11. Acesso em: 8 jan. 2025.