SUN, YONGQI; YANG, YUANSHENG; WANG, ZHIHAI. The value of the Ramsey number R5(C6). Utilitas Mathematica , [S. l.], v. 76, 2008. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/550. Acesso em: 8 may. 2026.