1. Institute of Macromolecular Chemistry of the Czech Academy of Sciences; Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
2. Department of Structural Analysis; Institute of Physics of the Czech Academy of Sciences; Na Slovance 2 Praha 8 182 21 Czech Republic
3. Institute of Materials Research of the Slovak Academy of Sciences; Watsonova 47 040 01 Košice Slovak Republic