BERMUDO, SERGIO; JALEMSKAYA, DENIS L.; SIGARRETA, JOSE M. Total 2-domination in Grid graphs. Utilitas Mathematica , [S. l.], v. 110, 2019. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/1435. Acesso em: 7 may. 2026.