1. Department of Experimental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava. Mlynska Dolina F2, 84248 Bratislava, Slovak Republic.
2. Università di Bologna, Dipartimento di Chimica “G. Ciamician”, via Selmi 2, Bologna 40126, Italy.
3. Department of Dynamics of Molecules and Clusters, J. Heyrovský Institute of Physical Chemistry Academy of Sciences of the Czech Republic, Dolejškova 3, 18223 Prague 8, Czech Republic