Preben Hansen Annelise Mark Pejtersen Hanne Albrechtsen Evaluation and Requirements Elicitation of a DL Annotation System for Collaborative Information Sharing. 177-186 2007 conf/delos/2007 DELOS Conference http://dx.doi.org/10.1007/978-3-540-77088-6_17 db/conf/delos/delos2007.html#HansenPA07