1. Laboratory of Nonlinear Systems-Circuits and Complexity, School of Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece
2. ELEDIA@AUTH, School of Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece
3. Department of Applied Informatics, University of Macedonia, Thessaloniki, Greece
4. Department of Electrical and Computer Engineering, University of Western Macedonia, Kozani, Greece