EULLARAN, L.; BALDADO, JR., M. Roman domination number of the join and corona of graphs. The Mindanawan Journal of Mathematics, [S. l.], v. 2, n. 1, p. 66–69, 2011. Disponível em: https://journals.msuiit.edu.ph/tmjm/article/view/20. Acesso em: 18 oct. 2024.