1. Department of Mathematics, Faculty of Science, University of Hradec Králové, 500 03 Hradec Králové, Czech Republic
2. Department of Applied Cybernetics, Faculty of Science, University of Hradec Králové, 500 03 Hradec Králové, Czech Republic
3. Electrical Engineering Department, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi Arabia
4. Department of Computer Science & Engineering and Computer Applications, PunjabInstitute of Technology, Moga, Punjab 142038, India