1. Department of Electrical and Computer Engineering, University of Patras, Patras, Greece
2. Raycap S.A., Drama, Greece
3. School of Applied Mathematics and Physical Sciences, National Technical University of Athens, Athens, Greece
4. School of Mineral Resources Engineering, Technical University of Crete, Chania, Greece
5. School of Electrical and Computer Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece
6. School of Electrical and Computer Engineering, National Technical University of Athens, Athens, Greece