CHEN, YAOJUN; TIAN, FENG; WEI, BING. The 3-domination-critical graphs with toughness one. Utilitas Mathematica , [S. l.], v. 61, 2002. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/255. Acesso em: 8 may. 2026.