DOWNAROWICZ, T.; DURAND, F. Factors of Toeplitz flows and other almost 1-1 extensions over group rotations. Mathematica Scandinavica, Berkeley, CA, United States, v. 90, n. 1, p. 57–72, 2002. DOI: 10.7146/math.scand.a-14361. Disponível em: https://journals.msp.org/mscand/article/view/858. Acesso em: 24 jul. 2026.