BATES, T.; CARLSEN, T. M.; EILERS, S. Dimension groups associated to $\beta$-expansions. MATHEMATICA SCANDINAVICA, [S. l.], v. 100, n. 2, p. 198–208, 2007. DOI: 10.7146/math.scand.a-15022. Disponível em: https://www.mscand.dk/article/view/15022. Acesso em: 23 nov. 2024.