1. SBAI Department, Sapienza University, P.le A. Moro 5, I-00185 Rome, Italy
2. IOM-CNR Tasc, SS-14, Km 163.5, Area Science Park, Basovizza, I-34149 Trieste, Italy
3. Dipartimento di Scienze Chimiche e Farmaceutiche, Università degli Studi di Trieste, Via L. Giorgieri 1, I-34127 Trieste, Italy
4. Elettra Sincrotrone Trieste, SS-14, Km 163.5, Area Science Park, Basovizza, I-34149 Trieste, Italy
5. Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
6. Department of Physics, Stockholm University, Roslagstullsbacken 21, 10691 Stockholm, Sweden
7. Department of Physics and Astronomy, University of Uppsala, Box 516, SE-75120 Uppsala, Sweden
8. Department of Chemistry and Drug Technologies, Sapienza University, P.le A. Moro 5, I-00185 Rome, Italy