Digital Rights Management Technological, Economic, Legal and Political Aspects - Becker, Eberhard; Becker, Eberhard; Buhse, Willms; Buhse, Willms; Günnewig, Dirk; Günnewig, Dirk; Rump, Niels; Rump, Niels (Springer Berlin Heidelberg : Imprint: Springer, 2003)