ARICI, Francesca; RENNIE, Adam. The Cuntz-Pimsner extension and mapping cone exact sequences. Mathematica Scandinavica, Berkeley, CA, United States, v. 125, n. 2, p. 291–319, 2019. DOI: 10.7146/math.scand.a-115634. Disponível em: https://journals.msp.org/mscand/article/view/213. Acesso em: 24 jul. 2026.