TVERBERG, Helge. A New Derivation of the Information Function. Mathematica Scandinavica, Berkeley, CA, United States, v. 6, p. 297–298, 1958. DOI: 10.7146/math.scand.a-10555. Disponível em: https://journals.msp.org/mscand/article/view/2790. Acesso em: 25 jul. 2026.