., S. C.; KALAYATHANKAL, S. J. On the Sum and Product of Covering Numbers of Graphs and their Line Graphs. Communications in Mathematics and Applications, [S. l.], v. 6, n. 1, p. 9–16, 2015. DOI: 10.26713/cma.v6i1.275. Disponível em: http://www.rgnpublications.com/journals/index.php/cma/article/view/275. Acesso em: 28 apr. 2024.