CHANDOOR, Susanth; KALAYATHANKAL, Sunny Joseph. Operations on covering numbers of certain graph classes. International Journal of Advanced Mathematical Sciences, [S. l.], v. 4, n. 1, p. 1–3, 2016. DOI: 10.14419/ijams.v4i1.5531. Disponível em: https://www.sciencepubco.com/index.php/IJAMS/article/view/5531.. Acesso em: 27 apr. 2024.