CHRISTENSEN, Martin S. Regularity of Villadsen algebras and characters on their central sequence algebras. MATHEMATICA SCANDINAVICA, [S. l.], v. 123, n. 1, p. 121–141, 2018. DOI: 10.7146/math.scand.a-104840. Disponível em: https://tidsskrift.dk/math/article/view/104840. Acesso em: 13 aug. 2026.