ERDÖS, Paul; HERZOG, Fritz; PIRANIAN, George. Sets of divergence of Taylor series and of trigonometric series. Mathematica Scandinavica, Berkeley, CA, United States, v. 2, p. 261–265, 1954. DOI: 10.7146/math.scand.a-10413. Disponível em: https://journals.msp.org/mscand/article/view/2909. Acesso em: 25 jul. 2026.