Global Security, Safety and Sustainability & e-Democracy 7th International and 4th e-Democracy, Joint Conferences, ICGS3/e-Democracy 2011, Thessaloniki, Greece, August 24-26, 2011, Revised Selected Papers - Georgiadis, Christos K.; Jahankhani, Hamid; Pimenidis, Elias; Bashroush, Rabih; Al-Nemrat, Ameer (Springer Berlin Heidelberg : Imprint: Springer, 2012)