Nadia Nadah Mélanie Dulong de Rosnay Bruno Bachimont Licensing digital content with a generic ontology: escaping from the jungle of rights expression languages. 65-69 2007 conf/icail/2007 ICAIL http://doi.acm.org/10.1145/1276318.1276330 db/conf/icail/icail2007.html#NadahRB07