HELSON, Henry; BEURLING, Arne. Fourier-Stieltjes transforms with bounded powers. MATHEMATICA SCANDINAVICA, [S. l.], v. 1, p. 120–126, 1953. DOI: 10.7146/math.scand.a-10371. Disponível em: https://tidsskrift.dk/math/article/view/10371. Acesso em: 14 aug. 2026.