1. Information Technologies Institute, Centre for Research & Technology, 57001 Thessaloniki, Greece
2. School of Science and Technology, International Hellenic University, 14th km Thessaloniki-Moudania, 57001 Thessaloniki, Greece
3. Department of Energy Systems, University of Thessaly, Gaiopolis Campus, Ring Road of Larissa-Trikala, 41500 Larissa, Greece