POULSEN, Ebbe Thue. Boundary Values in Function Spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 10, p. 45–52, 1962. DOI: 10.7146/math.scand.a-10512. Disponível em: https://www.mscand.dk/article/view/10512. Acesso em: 5 dec. 2025.