1. University of Trieste, Chem. Pharm. Sc. Dept., Via Giorgieri 1, 34127 Trieste, Italy
2. Jožef Stefan Institute, Materials Synthesis Dept., Jamova 39, 1000 Ljubljana, Slovenia
3. University of Ljubljana, Pharmaceutical Technology Dept., Faculty of Pharmacy, Aškerčeva 7, 1000 Ljubljana, Slovenia
4. Area Science Park, Padriciano 99, 34149 Trieste, Italy
5. Elettra-Sincrotrone Trieste, S.S. 114 km 163.5, Basovizza, 34149 Trieste, Italy
6. University of Cagliari, Physics Dept., 09042 Monserrato, Cagliari, Italy