NORLING, Magnus Dahler. The $K$-Theory of Some Reduced Inverse Semigroup $C^*$-Algebras. Mathematica Scandinavica, Berkeley, CA, United States, v. 117, n. 2, p. 186–202, 2015. DOI: 10.7146/math.scand.a-22866. Disponível em: https://journals.msp.org/mscand/article/view/378. Acesso em: 24 jul. 2026.