1. Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 12116 Prague, Czech Republic
2. IT4Innovations & Nanotechnology Centre, VSB - Technical University of Ostrava, 17. listopadu 15, 70833 Ostrava-Poruba, Czech Republic
3. Directorate for Nuclear Safety and Security, European Commission, Joint Research Centre (JRC), Postfach 2340, D-76125 Karlsruhe, Germany