HEDBERG, L. I. Weighted Mean Approximation in Carathéodory Regions. MATHEMATICA SCANDINAVICA, [S. l.], v. 23, p. 113–122, 1968. DOI: 10.7146/math.scand.a-10902. Disponível em: https://www.mscand.dk/article/view/10902. Acesso em: 14 apr. 2025.