G. Follo: Some remarks on entropy numbers of sets with fractional dimension Jenaer schriften zur mathematik und informatik (Preprint) N. 12, 2000 G. Follo: Generalized self similar fractals and invariant energies (Ph.D. Thesis) 2001 G. Follo: Some remarks on fractals generated by sequence of finite systems of contractions Georgian Math. J. Vol. 8, N. 4, p. 733-752, 2001 G. Follo: Construction of energies on compact subsets of $R^n$ (Submitted Paper) 2002