KARAMI H.; KHODKAR, ABDOLLAH; SHEIKHOLESLAMI S.M. An improved upper bound for signed edge domination numbers in graphs. Utilitas Mathematica , [S. l.], v. 78, 2009. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/639. Acesso em: 8 may. 2026.