ALAM, Muhammad Jawaherul; SAMEE, Md. Abul Hassan; RABBI, Mashfiqui; RAHMAN, Md. Saidur. Minimum-Layer Upward Drawings of Trees. Journal of Graph Algorithms and Applications, [S. l.], v. 14, n. 2, p. 245–267, 2010. DOI: 10.7155/jgaa.00206. Disponível em: https://jgaa.info/index.php/jgaa/article/view/paper206. Acesso em: 30 jun. 2024.