Konstantinos Kotis George A. Vouros Alexandros G. Valarakos Andreas Papasalouros Xavier Vilajosana Ruby Krishnaswamy Nejla Amara-Hachmi The Grid4All Ontology for the Retrieval of Traded Resources in a Market-Oriented Grid. 933-939 2008 CISIS http://dx.doi.org/10.1109/CISIS.2008.27 db/conf/cisis/cisis2008.html#KotisVVPVKA08