DRM as Interlocking Challenge for Different Scientific Disciplines: Introduction. - Eberhard Becker; Willms Buhse; Dirk Günnewig; Niels Rump (Digital Rights Management, 2003)

Definition, Aspects, and Overview. - Niels Rump (Digital Rights Management, 2003)

Can digital rights management be standardized? - Niels Rump (IEEE Signal Process. Mag., 2004)