Maria Strimpakou Ioanna Roussaki Miltiades E. Anagnostou A Context Ontology for Pervasive Service Provision. 775-779 2006 conf/aina/2006 AINA (2) http://doi.ieeecomputersociety.org/10.1109/AINA.2006.15 db/conf/aina/aina2006.html#StrimpakouRA06