1. Adobe: Portable Document Rights Language (PDRL) Specification (2005),
www.adobe.com/devnet/livecycle/policyserver/articles/pdrl.pdf
2. Lecture Notes in Computer Science;M. Backes,2003
3. Barth, A., Datta, A., Mitchell, J.C., Nissenbaum, H.: Privacy and contextual integrity: Framework and applications. In: Proc. of the 2006 IEEE Symposium on Security and Privacy, pp. 184–198. IEEE Computer Society Press, Los Alamitos (2006)
4. Bettini, C., Jajodia, S., Wang, X.S., Wijesekera, D.: Provisions and obligations in policy rule management. Journal of Network and System Management 11(3), 351–372 (2003)
5. Chong, C.N., Corin, R.J., Doumen, J.M., Etalle, S., Hartel, P.H., Law, Y.W., Tokmakoff, A.: Licensescript: A logical language for digital rights management. Annals of telecommunications special issue on Network and Information systems security 61(3-4), 284–331 (2006)