1. Institute of Applied Synthetic Chemistry; TU Wien; Getreidemarkt 9/163-AC 1060 Vienna Austria
2. Atominstitut; TU Wien; Stadionallee 2 1020 Vienna Austria
3. Department of Mineralogy and Crystallography; University of Vienna; Althanstraße 14 (UZA 2) 1090 Vienna Austria
4. Institute of Solid State Physics; TU Wien; Wiedner Hauptstraße 8-10/050 1040 Vienna Austria