3Chong C N, Corin R, Doumen J, et al. LicenseScript: A logical language for digital rights management[ J]. Annales des Telecommunications, 2006, 61(3/4): 284-331.
4Gunter C A, Weeks S T, Wright A K. Models and languages for digital rights [C] //Proc of the 34th Annual Hawaii Int Conf on Systems Sciences. Los Alamitos, CA: IEEE Computer Society, 2001:4034-4038.
5Pucella R, Weissman V. A logic for reasoning about digital rights [C] //Proc of the 15th IEEE Computer Security Foundations Workshop. Washington: IEEE, 2002: 282-294.
6Bertino E, Catania B, Gori R, et al. Active-U-Datalog: Integrating active rules in a logical update language [G] // LNCS 1472: Proc of Int Seminar on Logic Databases and the Meaning of Change. Berlin: Springer, 1998:107-133.
7Montesi D, Bertino E, Martelli M. Transactions and updates in deductive databases[J]. IEEE Trans on Knowledge and Data Engineering, 1997, 9(5): 784-797.
8Zhong Yong, Zhu Zhen, Lin Dongmei, et al. A method of fair use in digital rights management [G]//LNCS 4822 : Proc of the 10th Int Conf on Asian Digital Libraries. Berlin: Springer, 2007:160-164.
9Chong C N, Ren B, Doumen J M, et al. License protection with a tamper-resistant token [G] //LNCS 3325:Proc of the 5th Int Workshop Information Security Applications. Berlin: Springer, 2004:223-227.