1. University of Dunaujvaros,Department of Software Development and Application,Dunaujvaros,Hungary
2. Óbuda University,Institute of Engineering, Alba Regia Technical Faculty,Székesfehérvár,Hungary
3. Óbuda University,Ágoston Trefort Engineering Education Center, Institute of Electrophysics, Kandó Kálmán Faculty of Electrical Engineering,Budapest,Hungary