DOMAR, Y. On spectral analysis in the narrow topology. MATHEMATICA SCANDINAVICA, [S. l.], v. 4, p. 328–332, 1956. DOI: 10.7146/math.scand.a-10481. Disponível em: https://www.mscand.dk/article/view/10481. Acesso em: 22 nov. 2024.