1. Technical University of Košice,Department of Theoretical and Industrial Electrical Engineering,Košice,Slovakia
2. Technical University of Košice,Department of Theoretical and Electrical Engineering,Košice,Slovakia
3. Kremenchuk Mykhailo Ostrohradskyi National University,Department of Automation and Computer Systems,Kremenchuk,Ukraine
4. Kremenchuk Mykhailo Ostrohradskyi National University,Department of Electrical Engineering,Kremenchuk,Ukraine