FARSI, Carla; WATLING, Neil. $C^*$-Algebras of Dynamical Systems on the Non-Commutative Torus. Mathematica Scandinavica, Berkeley, CA, United States, v. 75, p. 101–110, 1994. DOI: 10.7146/math.scand.a-12506. Disponível em: https://journals.msp.org/mscand/article/view/1170. Acesso em: 24 jul. 2026.