Bernard Stepien Amy P. Felty Stan Matwin A Non-technical User-Oriented Display Notation for XACML Conditions. 53-64 2009 MCETECH http://dx.doi.org/10.1007/978-3-642-01187-0_5 conf/mcetech/2009 db/conf/mcetech/mcetech2009.html#StepienFM09