Ergodic Properties of sub-hyperbolic Functions with
               Polynomial Schwarzian Derivatives.
(with M. Urbanski)  
               Proc. Edinburgh Math. Soc 53 (2010), 471-502.
pdf-file

           Thermodynamical Formalism and Multifractal Analysis for
              Meromorphic Functions of finite order.
(with M. Urbanski)
              Memoir AMS, Vol. 203, No. 954 (2010).
pdf-file

           The size of the Julia set of meromorphic functions.
               Math. Nachrichten 282, No. 8 (2009), 1189-1194. 
 pdf-file

            Geometric thermodynamical formalism and real analyticity
                for meromorphic functions of finite order.
(with M. Urbanski)
                Ergodic Theory and Dynamical Systems 28 (2008), 915-946.
  pdf-file

            Fractal measures for meromorphic functions of finite order. (with M. Urbanski)
               
Dynamical Systems, 22 (2007), 169-178.  pdf-file

           Exponential Elliptics give dimension two. (with M. Urbanski)
                Illinois J. Math., 49 (2005), 291-294.  ps-file

            Gibbs and Equilibrium Measures for Elliptic Functions. (with M. Urbanski)
               Math. Zeitschrift, 250 (2005), 657-683.  ps-file

           Distance Expanding Random Mappings, Thermodynamical Formalism,   
               Gibbs measures and Fractal Geometry. 
(with B. Skorulski and M. Urbanski)
               preprint.  pdf-file

           Rational functions without conformal measures on the conical set.
                preprint.  ps-file

           Finer Geometric  Rigidity of limit sets of conformal IFS. (with M. Urbanski)
                Proceedings of the AMS, 131, Nr.12 (2003), 3695-3702.  ps-file

           Comparing measures and invariant line fields.
                Ergodic Theory & Dynamical Syst. 22 (2002),  555-570.  ps-file

           Rigidity of connected limit sets of conformal IFS. (with R. D. Mauldin and M. Urbanski)
               Michigan Math. J. 49 (2001), 451-458.  ps-file