GILL, J. Attractive Fixed Points and Continued Fractions. MATHEMATICA SCANDINAVICA, [S. l.], v. 33, p. 261–268, 1973. DOI: 10.7146/math.scand.a-11488. Disponível em: https://www.mscand.dk/article/view/11488. Acesso em: 3 may. 2024.