Javier Rubio-Loyola Joan Serrat Marinos Charalambides Paris Flegkas George Pavlou A Functional Solution for Goal-Ooriented Policy Refinement. 133-144 2006 conf/policy/2006 POLICY http://doi.ieeecomputersociety.org/10.1109/POLICY.2006.5 db/conf/policy/policy2006.html#Rubio-LoyolaSCFP06