@inproceedings{P105.229,
author={De Keukelaere, Frederik and  DeMartini, Thomas and Bekaert, Jeroen and Van de Walle, Rik},
title={Supporting rights checking in an MPEG-21 Digital Item Processing environment},
booktitle={Proceedings of the IEEE International Conference on Multimedia & Expo},
year={2005},
month={7},
pages={4 pp op CD},
address={Amsterdam},
}