Mansoor Ahmed Amin Andjomshoaa Tho Manh Nguyen A. Min Tjoa Towards an Ontology-based Risk Assessment in Collaborative Environment Using the SemanticLIFE. 400-407 2007 ARES http://doi.ieeecomputersociety.org/10.1109/ARES.2007.152 conf/IEEEares/2007 db/conf/IEEEares/ares2007.html#AhmedANT07