1. Institute of Low Temperature and Structure Research
2. Polish Academy of Sciences
3. 50-950 Wrocław 2
4. Poland
5. CNR-SPIN
6. c/o Dipartimente di Scienze Fisiche e Chimiche Universita degli Studi dell’Aquila
7. 67100 Coppito
8. Italy
9. Physics Department and CICECO
10. University of Aveiro
11. 3810-193 Aveiro
12. Portugal
13. Advanced Materials Engineering and Modeling Group
14. Wroclaw University of Science and Technology
15. Wrocław
16. Department of Experimental Physics
17. Wrocław University of Science and Technology