CUNTZ, Joachim; EVANS, David E. Some remarks on $C^*$-algebras associated with certain topologicalMarkov chains. Mathematica Scandinavica, Berkeley, CA, United States, v. 48, p. 235–240, 1981. DOI: 10.7146/math.scand.a-11914. Disponível em: https://journals.msp.org/mscand/article/view/1713. Acesso em: 25 jul. 2026.