1. Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, 612 00 Brno, Czech Republic
2. Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic
3. Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 267/2, 611 37 Brno, Czech Republic