KEPERT, A. Amenability in Group Algebras and Banach Algebras. MATHEMATICA SCANDINAVICA, [S. l.], v. 74, p. 275–292, 1994. DOI: 10.7146/math.scand.a-12497. Disponível em: https://www.mscand.dk/article/view/12497. Acesso em: 29 apr. 2024.