CHRISTENSEN, Lars Winther. Sequences for complexes II. Mathematica Scandinavica, Berkeley, CA, United States, v. 91, n. 2, p. 161–174, 2002. DOI: 10.7146/math.scand.a-14384. Disponível em: https://journals.msp.org/mscand/article/view/835. Acesso em: 24 jul. 2026.