IZZO, A. J. A simple proof of the existence of Haar measure on amenable groups. MATHEMATICA SCANDINAVICA, [S. l.], v. 120, n. 2, p. 317–319, 2017. DOI: 10.7146/math.scand.a-25626. Disponível em: https://www.mscand.dk/article/view/25626. Acesso em: 17 jan. 2022.