HANSBERG, ADRIANA; VOLKMANN, LUTZ. Characterization of unicyclic graphs with equal 2-domination number and domination number plus one. Utilitas Mathematica , [S. l.], v. 77, 2008. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/532. Acesso em: 8 may. 2026.