1. Institute of Telecommunications, AGH University of Science and Technology,Krakǒw,Poland
2. University of Applied Sciences Technikum-Wien,Department of Electronic Engineering,Wien,Austria
3. University of Technology,Department of Computer Science, Electronics and Electrical Engineering, Kielce,Kielce,Poland
4. University of Computer Engineering and Telecommunications,Department of Teleinformatics,Kielce,Poland