1. HUN-REN Wigner Research Center for Physics, Konkoly-Thege Miklós út 29-33, H-1121 Budapest, Hungary
2. MATE Institute of Technogy, Károly Róbert Campus, Mátrai út 36, H-3200 Gyöngyös, Hungary
3. Department of Methodology for Business Analysis, Budapest Business University, Alkotmány út 9–11, H-1054 Budapest, Hungary
4. Division of Particle and Nuclear Physics, Department of Physics, Lund University, 221 00 Lund, Sweden
5. Department of Atomic Physics, Eötvös University, Pázmány P. s. 1/A, H-1117 Budapest, Hungary