WANG, WEIFAN; WANG, YIQIAO; SUN, HAINA. Linear coloring of graphs without 4-cycles and embeddable in a surface of nonnegative Euler characteristic. Utilitas Mathematica , [S. l.], v. 95, 2014. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/1010. Acesso em: 8 may. 2026.