Quoc Dinh Truong Taoufiq Dkaki Josiane Mothe Pierre-Jean Charrel GVC: a graph-based Information Retrieval Mode. 337-351 2008 CORIA http://asso-aria.org/coria/2008/337.pdf conf/coria/2008 db/conf/coria/coria2008.html#TruongDMC08