@inproceedings{P106.248, author={De Keukelaere, Frederik and Wang, Xin and Barlas, Chris and DeMartini, Thomas and De Zutter, Saar and Van de Walle, Rik}, title={A Design Methodology for MPEG-21 based Digital Policy Management Systems}, booktitle={Proceedings of the 1st International Workshop on Security }, year={2006}, month={10}, pages={61-72}, editor={Yoshiura, H. and Sakurai, K. and Rnnenberg, K. and Murayama, Y. and Kawamura, S.}, publisher={Springer}, address={Kyoto}, }