1. Institute of Organic Chemistry and Biochemistry, Academy of Sciences, Flemingovo náměstí 2, 16610 Prague, Czech Republic
2. Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 12116 Prague 2, Czech Republic
3. Department of Optics, Palacký University, 17. listopadu 12, 77146 Olomouc, Czech Republic