MATSUMOTO, Kengo. Cuntz-Krieger Algebras Associated with Hilbert $C^*$-Quad Modules of Commuting Matrices. Mathematica Scandinavica, Berkeley, CA, United States, v. 117, n. 1, p. 126–149, 2015. DOI: 10.7146/math.scand.a-22239. Disponível em: https://journals.msp.org/mscand/article/view/382. Acesso em: 24 jul. 2026.