ERDÖS, Paul; HERZOG, Fritz; PIRANIAN, George. Sets of divergence of Taylor series and of trigonometric series. MATHEMATICA SCANDINAVICA, [S. l.], v. 2, p. 261–265, 1954. DOI: 10.7146/math.scand.a-10413. Disponível em: https://www.mscand.dk/article/view/10413. Acesso em: 5 dec. 2025.