1. Bydgoszcz University of Science and Technology,Faculty of Telecommunication, Computer Science and Electrical Engineering,Bydgoszcz,Poland,85-796
2. University of Niš,Faculty of Electronic Engineering,Niš,Serbia,18000
3. Gdanśk Univeristy of Technology,Faculty of Electronics, Telecommunications and Informatics,Gdanśk,Poland,80-233
4. Poznan University of Technology,Faculty of Control, Robotics, and Electrical Engineering,Poznan,Poland,60-965
5. Complex of Electronics Schools,Bydgoszcz,Poland,85-092