GIORDANO, Thierry; PUTNAM, Ian F.; SKAU, Christian F. $K$-theory and asymptotic index for certain almost one-to-one factors. Mathematica Scandinavica, Berkeley, CA, United States, v. 89, n. 2, p. 297–319, 2001. DOI: 10.7146/math.scand.a-14343. Disponível em: https://journals.msp.org/mscand/article/view/862. Acesso em: 24 jul. 2026.