GĄSIOR, A.; SZCZEPAŃSKI, A. Examples of non connective C*-algebras. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica, [S. l.], v. 20, p. 57–61, 2021. Disponível em: https://studmath.up.krakow.pl/article/view/8491. Acesso em: 19 jan. 2022.