EBALLE, ROLITO G.; CANOY JR., SERGIO R. The essential cutset number and connectivity of the join and composition of graphs. Utilitas Mathematica , [S. l.], v. 84, 2011. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/819. Acesso em: 8 may. 2026.