YANG, YUANSHENG; LIN, XIAOHUI; DONG, GUOCHENG; ZHAO, YONGXIANG. Extremal graphs without three-cycles, four-cycles or five-cycles. Utilitas Mathematica , [S. l.], v. 66, 2004. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/325. Acesso em: 8 may. 2026.