Electronic Government 6th International Conference, EGOV 2007, Regensburg, Germany, September 3-7, 2007: Proceedings - EGOV 2007 (2007 : Regensburg, Germany); Wimmer, Maria A.; Gronlund, Anke.; Scholl, Jochen; SpringerLink (Online service) (Berlin, Heidelberg : Springer-Verlag Berlin Heidelberg, 2007)