On distance k-domination number of graphs under product operations. Gulf Journal of Mathematics, [S. l.], v. 19, n. 1, p. 117–124, 2025. DOI: 10.56947/gjom.v19i1.2032. Disponível em: https://gjom.org/index.php/gjom/article/view/2032. Acesso em: 26 aug. 2026.