SHAO, ZEHUI; PAN, LINQIANG; XU, XIAODONG. New upper bounds for vertex Folkman numbers Fu(3, k; k + 1). Utilitas Mathematica , [S. l.], v. 80, 2009. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/592. Acesso em: 8 may. 2026.