1. School of Materials Sciences and Engineering
2. University of Science and Technology Beijing
3. China
4. Laboratory of Optical Materials and Structures
5. Institute of Semiconductor Physics
6. SB RAS
7. Novosibirsk 630090
8. Russia
9. Laboratory of Crystal Physics
10. Kirensky Institute of Physics
11. Krasnoyarsk 660036
12. Council of Scientific and Industrial Research – National Physical Laboratory Dr K S Krishnan Marg
13. New Delhi 110012
14. India
15. Department of Physics
16. Indian Institute of Technology
17. New Technologies – Research Centre
18. University of West Bohemia
19. Univerzitni 8
20. 306 14 Pilsen
21. Czech Republic