LI, JIANGUO; GE, SHAN; XU, CHANGQING. Neighbor sum distinguishing total colorings of planar graphs with girth at least 5. Utilitas Mathematica , [S. l.], v. 104, 2017. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/1183. Acesso em: 6 nov. 2025.