1. Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, 162 06 Prague 6, Czech Republic
2. Centre of Polymer Systems, Tomas Bata University in Zlin, 760 01 Zlin, Czech Republic
3. Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russian Federation
4. University of Chemistry and Technology Prague, 166 28 Prague 6, Czech Republic
5. Faculty of Science, J.E. Purkyně University, 400 96 Ústí nad Labem, Czech Republic
6. Faculty of Mathematics and Physics, Charles University, 180 00 Prague 8, Czech Republic