RADSTRÖM, H. On the Iteration of analytic functions . MATHEMATICA SCANDINAVICA, [S. l.], v. 1, p. 85–92, 1953. DOI: 10.7146/math.scand.a-10367. Disponível em: https://www.mscand.dk/article/view/10367. Acesso em: 28 apr. 2024.