BEASLEY, LeRoy. Binary vertex labelings of graphs and digraphs. Journal of Algebra Combinatorics Discrete Structures and Applications, [S. l.], v. 12, n. 1, p. 1–17, 2024. DOI: 10.13069/jacodesmath.v12i1.305. Disponível em: https://jacodesmath.com/index.php/jacodesmath/article/view/305. Acesso em: 12 sep. 2026.