1. Doppler Institute for Mathematical Physics and Applied Mathematics, Prague, Czech Republic
2. Department of Physics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague, Czech Republic
3. Nuclear Physics Institute, Czech Academy of Sciences, Řež, Czech Republic
4. Department of Applied Mathematics, Faculty of Information Technology, Czech Technical University in Prague, Prague, Czech Republic
5. Department of Mathematics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague, Czech Republic