RENNIE, Adam; ROBERTSON, David; SIMS, Aidan. Groupoid algebras as Cuntz-Pimsner algebras. Mathematica Scandinavica, Berkeley, CA, United States, v. 120, n. 1, p. 115–123, 2017. DOI: 10.7146/math.scand.a-25507. Disponível em: https://journals.msp.org/mscand/article/view/330. Acesso em: 24 jul. 2026.