1. Technical University of Košice,Dept. of Theoretical and Industrial Electrical Engineering,Košice,Slovakia
2. Kremenchuk Mykhailo Ostrohradskyi National University,Dept. of Electrical Engineering,Kremenchuk,Ukraine
3. Yuriy Fedkovych Chernivtsi National University,Dept. of Radio Engineering and Information Securit),Chernivtsi,Ukraine
4. Kremenchuk Mykhailo Ostrohradskyi National University,Dept. of Computer Engineering and Electronics,Kremenchuk,Ukraine