CONTRERAS, M. D.; DÍAZ-MADRIGAL, S.; POMMERENKE, Ch. On boundary critical points for semigroups of analytic functions. Mathematica Scandinavica, Berkeley, CA, United States, v. 98, n. 1, p. 125–142, 2006. DOI: 10.7146/math.scand.a-14987. Disponível em: https://journals.msp.org/mscand/article/view/710. Acesso em: 24 jul. 2026.