Electronic Participation 7th IFIP 8.5 International Conference, ePart 2015, Thessaloniki, Greece, August 30 – September 2, 2015, Proceedings - Tambouris, Efthimios; Panagiotopoulos, Panos; Sæbø, Øystein; Tarabanis, Konstantinos; Wimmer, Maria A.; Milano, Michela; Pardo, Theresa (Springer International Publishing : Imprint: Springer, 2015)