GILL, John. Attractive Fixed Points and Continued Fractions. Mathematica Scandinavica, Berkeley, CA, United States, v. 33, p. 261–268, 1973. DOI: 10.7146/math.scand.a-11488. Disponível em: https://journals.msp.org/mscand/article/view/2179. Acesso em: 25 jul. 2026.