1. [B] A. F. Beardon, Iteration of rational functions, Graduate Texts in Mathematics, vol. 132, Springer-Verlag, New York, 1991.
2. [BP] A. F. Beardon and Ch. Pommerenke, The Poincaré metric of plane domains, J. London Math. Soc. (2) 18 (1978), no. 3, 475–483.
3. [CG] L. Carleson and T. W. Gamelin, Complex dynamics, Universitext: Tracts in Mathematics, Springer-Verlag, New York, 1993.
4. [D] A. Douady, Disques de Siegel et anneaux de Herman, Astérisque (1987), no. 152-153, 4, 151–172 (1988).
5. [F] J. L. Fernández, Domains with strong barrier, Rev. Mat. Iberoamericana 5 (1989), no. 1-2, 47–65.