An example of a 16-vertex Folkman edge (3,4)-graph without 8-cliques. Annual of Sofia University St. Kliment Ohridski. Faculty of Mathematics and Informatics, [S. l.], v. 98, p. 127–141, 2008. Disponível em: https://annual.uni-sofia.bg/index.php/fmi/article/view/133. Acesso em: 11 jan. 2026.