DINGER, U. Measure determining classes of balls in Banach spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 58, p. 23–34, 1986. DOI: 10.7146/math.scand.a-12126. Disponível em: https://www.mscand.dk/article/view/12126. Acesso em: 3 jul. 2024.