1. [C1] Carleson, L.: Selected problems on exceptional sets Princeton, N-J: Van Nostrand 1967
2. [C2] Carleson, L.: Preprint 1985
3. [J-W] Jones, P., Wolff, T.: Preprint 1985
4. [K-W] Kaufman, R., Wu, J-M: On the snow flake domain. Stud. Math.75, 177?182 (1983)
5. [M] Makarov, N.: On the distorsion of boundary sets under conformal mappings. Proc. London Math. Soc.51, 369?384 (1985)