4[1]Michiels S.Towards a Software Architecture for DRM[J].Proceedings of the ACM Digital Rights Management workshop DRM'05,2005.
5[2]YU Y Y,TANG Z.A Survey of Research on Digital Rights Management[D].Chinese Jounal of Computers,2005,28(12).
6[3]Jonker H L,Mauw S.Core Security Requirements of DRM Systems.Symposium on Information Theory in the Benelux,June 2004.
7[4]Jonker H L.Secutity Aspects of DRM Systems.25th Symposium on Information Theory in the Benelux,2004.
8[5]Bogdan C Popescu,Bruno Crispo.A DRM security architecture for home networks.Proceedings of the 4th ACM workshop on Digital rights management,October 25-25,2004,Washington De,USA.