Mouhamadou Thiam Nathalie Pernelle Nacéra Bennacer Contextual and Metadata-based Approach for the Semantic Annotation of Heterogeneous Documents. 18-30 2008 SeMMA http://ceur-ws.org/Vol-346/2.pdf conf/esws/2008semma db/conf/esws/semma2008.html#ThiamPB08