This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Sławomir Pluta
Opole University of Technology, Faculty Of Electrical Engineering, Automatic Control and Informatics, Institute of Control and Computer Engineering, Gen. K. Sosnkowskiego 31 Str., 45-272Opole, Poland
Grzegorz Początko
P.U.H. MARPONET, Rynek 17d Str., 49-340Lewin Brzeski, Poland