1. University of Žilina,Faculty of Electrical Engineering and Information Technology,Department of Multimedia and Information-Communication Technologies,Žilina,Slovakia,01026
2. Energotel, a.s.,Bratislava,Slovakia,82108
3. University of Strathclyde,Department of Electronic and Electrical Engineering,Glasgow G11XQ,United Kingdom
4. University of Žilina, Faculty of Electrical Engineering and Information Technology, Institute of Aurel Stodola,Liptovský Mikuláš,Slovakia,03101