1. Department of Chemical Physics and Optics; Faculty of Mathematics and Physics, Charles University; Ke Karlovu 3 Prague 2 121 16 Czech Republic
2. Faculty of Chemistry and Chemical Technologyn University of Ljubljana; Večna pot 113 Ljubljana 1000 Slovenia
3. Department of Laboratory Methods and Information Systems; Faculty of Health and Social Studies, University of South Bohemia; J. Boreckého 27 České Budějovice 370 11 Czech Republic