EXEL, R. Approximately Finite $C^*$-Algebras and Partial Automorphisms. MATHEMATICA SCANDINAVICA, [S. l.], v. 77, p. 281–288, 1995. DOI: 10.7146/math.scand.a-12566. Disponível em: https://www.mscand.dk/article/view/12566. Acesso em: 11 apr. 2025.