1. OASIS, eXtensible Access Control Markup Language (XACML).
http://www.oasis-open.org/committees/tc_home.php?wg_abbrev=xacml
2. Kolovsk, V., Hendler, J., et al.: Formalizing xacml using defeasible description logics. Technical Report TR-233-11, University of Maryland, USA (2006)
3. Sun’s XACML implementation (2005).
http://sunxacml.sourceforge.net
4. Enterprise XACML (2012).
http://code.google.com/p/enterprise-java-xacml/
5. Liu, A.X., et al.: Designing fast and scalable XACML policy evaluation engines. IEEE Trans. Comput. 60(12), 1802–1817 (2011)