1. Charles University Faculty of Science Department of Analytical Chemistry UNESCO Laboratory of Environmental Electrochemistry Albertov 6 128 00 Prague 2 Czech Republic
2. Slovak University of Technology Faculty of Chemical and Food Technology Institute of Analytical Chemistry Radlinského 9 812 37 Bratislava Slovak Republic
3. FZU – Institute of Physics of the Czech Academy of Sciences Na Slovance 2 182 21 Prague Czech Republic