1. Dipartimento
di Chimica e Chimica Industriale, Università di Genova, Via Dodecaneso
31, I-16146 Genova, Italy
2. Department
of Materials Science and Engineering, Lviv Polytechnic National University, Ustiyanovycha Str. 5, 79013 Lviv, Ukraine
3. Institute
of Mineralogy and Crystallography, University of Vienna, Althanstrasse14, A-1090 Wien, Austria
4. Institute
of Solid State Physics, TU Wien, Wiedner Hauptstraße 8-10, A-1090 Wien, Austria
5. Institute
of Materials Chemistry and Research, University of Vienna, Währingerstraße
42, A-1090 Wien, Austria