VARGHESE, E. S.; XAVIER, D. A.; MATHEW, D.; RAJA, S. A. A. Strong Open Monophonic Number of a Graph. Communications in Mathematics and Applications, [S. l.], v. 12, n. 3, p. 509–518, 2021. DOI: 10.26713/cma.v12i3.1531. Disponível em: https://www.rgnpublications.com/journals/index.php/cma/article/view/1531. Acesso em: 4 may. 2024.