DUPONT, Luis A.; VILLARREAL, Rafael H. Edge ideals of clique clutters of comparability graphs and the normality of monomial ideals. MATHEMATICA SCANDINAVICA, [S. l.], v. 106, n. 1, p. 88–98, 2010. DOI: 10.7146/math.scand.a-15126. Disponível em: https://tidsskrift.dk/math/article/view/15126. Acesso em: 13 aug. 2026.