1. Department of Nuclear Chemistry, Faculty of Natural Science, Comenius University in Bratislava, Ilkovičova 6, 842 15 Bratislava, Slovak Republic
2. Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovak republic
3. Polymers Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovak republic