TORNEHAVE, Hans. On Entire Functions Almost Periodic in Two Directions. Mathematica Scandinavica, Berkeley, CA, United States, v. 6, p. 160–174, 1958. DOI: 10.7146/math.scand.a-10540. Disponível em: https://journals.msp.org/mscand/article/view/2805. Acesso em: 25 jul. 2026.