E-Democracy, Security, Privacy and Trust in a Digital World 5th International Conference, E-Democracy 2013, Athens, Greece, December 5-6, 2013, Revised Selected Papers - Sideridis, Alexander B.; Kardasiadou, Zoe; Yialouris, Constantine P.; Zorkadis, Vasilios (Springer International Publishing : Imprint: Springer, 2014)