1. Polymer Institute, Slovak Academy of Sciences, Dúbravská cestá 9, 84541 Bratislava, Slovakia
2. Vinča Institute of Nuclear Sciences, University of Belgrade, Mike Alasa 12−14, 11001 Belgrade, Serbia
3. Centre of Polymer Systems, Tomas Bata University in Zlín, Trida Tomase Bati, 5678 Zlín, Czech Republic
4. J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejškova 3, 182 23 Praha 8, Czech Republic