1. ELEDIA@AUTH, School of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
2. Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Shenzhen 518110, China
3. Department of Electrical and Computer Engineering, University of Western Macedonia, 50131 Kozani, Greece
4. Department of Applied Informatics, School of Information Sciences, University of Macedonia, 54636 Thessaloniki, Greece
5. School of Electrical and Computer Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece