HEWITT, E. The Ranges of Certain Convolution Operators. MATHEMATICA SCANDINAVICA, [S. l.], v. 15, p. 147–155, 1964. DOI: 10.7146/math.scand.a-10738. Disponível em: https://www.mscand.dk/article/view/10738. Acesso em: 24 nov. 2024.