GJERDE, R.; JOHANSEN, Ørjan. $C^*$-algebras associated to non-homogeneous minimal systems and their K-theory. MATHEMATICA SCANDINAVICA, [S. l.], v. 85, n. 1, p. 87–104, 1999. DOI: 10.7146/math.scand.a-13887. Disponível em: https://www.mscand.dk/article/view/13887. Acesso em: 19 may. 2024.