SQUIER, Craig C. The Homological Algebra of Artin Groups. Mathematica Scandinavica, Berkeley, CA, United States, v. 75, p. 5–43, 1994. DOI: 10.7146/math.scand.a-12500. Disponível em: https://journals.msp.org/mscand/article/view/1175. Acesso em: 24 jul. 2026.