ASIOFF, P. On the Directions of Almost Periodicity of Entire Functions. MATHEMATICA SCANDINAVICA, [S. l.], v. 16, p. 94–96, 1965. DOI: 10.7146/math.scand.a-10750. Disponível em: https://www.mscand.dk/article/view/10750. Acesso em: 1 may. 2024.