Extremal and asymptotic properties of irreducible coverings of graphs by cliques. Journal of Prime Research in Mathematics, [S. l.], v. 1, n. 1, p. 101 – 110, 2005. Disponível em: https://jprm.sms.edu.pk/index.php/jprm/article/view/2. Acesso em: 4 feb. 2026.