1. Constantine the Philosopher University in Nitra,Faculty of Natural Sciences and Informatics,Department of Informatics,Nitra,Slovakia,94901
2. Óbuda University,Kandó Kálmán Faculty of Electrical Engineering,Budapest,Hungary
3. Institute of Cyberphysical Systems Óbuda University,Antal Bejczy Center for Intelligent Robotics, John von Neumann Faculty,Budapest,Hungary