1. University of Western Macedonia,Campus ZEP Kozani,Department of Electrical and Computer Engineering,Kozani,Greece,50100
2. MetaMind Innovations P.C. Kila,Kozani,Greece,50100
3. Centre for Research and Technology Hellas/Information Technologies Institute,Thessaloniki,Greece,57001
4. Sidroco Holdings Ltd,Nicosia,Cyprus,1077
5. International Hellenic University,Kavala Campus,Department of Computer Science,Kavala,Greece,65404
6. Kingston University London,Department of Networks and Digital Media,Surrey,UK,KT1 2EE
7. University of Macedonia,School of Information Sciences,Department of Applied Informatics,Thessaloniki,Greece
8. Aristotle University of Thessaloniki,School of Physics,Thessaloniki,Greece,54124