1. Department of Chemical and Pharmaceutical Sciences
2. University of Ferrara
3. 44121 Ferrara
4. Italy
5. Helmholtz-Zentrum dresden-Rossendorf
6. c/o European Synchrotron Radiation Facility
7. 38000 Grenoble
8. France
9. Physics Department of the Trento University
10. Trento
11. Department of Physics and Astronomy
12. University of Bologna
13. Bologna