1. Statistical and Biological Physics Research Group of the Hungarian Academy of Sciences, Pázmány Péter sétány 1/A, 1117 Budapest, Hungary.
2. Department of Biological Physics, Eötvös Loránd University, Pázmány Péter sétány 1/A, 1117 Budapest, Hungary.
3. Molde University College, Britvegen 2, 6410 Molde, Norway.
4. Department of Computer Science, Vrije Universiteit Amsterdam, de Boelelaan 1081a, 1181HV Amsterdam, Netherlands.