NIU, ZHAOHONG; XIONG, LIMING; ZHANG, SHUMIN. Smallest 2-edge-connected graphs without a spanning trail. Utilitas Mathematica , [S. l.], v. 88, 2012. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/869. Acesso em: 8 may. 2026.