MUHLY, Paul S.; SOLEL, Baruch. On the Simplicity of some Cuntz-Pimsner Algebras. Mathematica Scandinavica, Berkeley, CA, United States, v. 83, n. 1, p. 53–73, 1998. DOI: 10.7146/math.scand.a-13842. Disponível em: https://journals.msp.org/mscand/article/view/986. Acesso em: 25 jul. 2026.