1. Dipartimento di Scienze e Tecnologie Chimiche
2. Università di Roma Tor Vergata
3. Rome
4. Italy
5. Department of Chemistry
6. Faculty of Science
7. Purkynje University
8. Ústí nad Labem
9. Department of Natural Compounds Chemistry
10. Institute of Chemical Technology Prague
11. 166 28 Prague 6
12. Czech Republic