EMTANDER, Eric. A class of hypergraphs that generalizes chordal graphs. Mathematica Scandinavica, Berkeley, CA, United States, v. 106, n. 1, p. 50–66, 2010. DOI: 10.7146/math.scand.a-15124. Disponível em: https://journals.msp.org/mscand/article/view/573. Acesso em: 24 jul. 2026.