ESSÉN, M. A Theorem on the Maximum Modulus of Entire Functions. MATHEMATICA SCANDINAVICA, [S. l.], v. 17, p. 161–168, 1965. DOI: 10.7146/math.scand.a-10770. Disponível em: https://www.mscand.dk/article/view/10770. Acesso em: 3 may. 2024.