1. Department of Chemistry, University of Bari “Aldo Moro”, 70125 Bari, Italy
2. Institute of Biophysics, Academy of Sciences of the Czech Republic, Kralovopolska 135, 61265 Brno, Czech Republic
3. Department of Biophysics, Faculty of Science, Palacky University, Slechtitelu 27, 78371 Olomouc, Czech Republic