Tim Moses. <a href="http://docs.oasis-open.org/xacml/2.0/access_control-xacml-2.0-core-spec-os.pdf"><cite>OASIS eXtensible Access Control Markup Language (XACML) Version 2.0</cite></a>. 01 Feb 2005 URL: <a href="http://docs.oasis-open.org/xacml/2.0/access_control-xacml-2.0-core-spec-os.pdf">http://docs.oasis-open.org/xacml/2.0/access_control-xacml-2.0-core-spec-os.pdf</a>