Hak Lae Kim Alexandre Passant John G. Breslin Simon Scerri Stefan Decker Review and Alignment of Tag Ontologies for Semantically-Linked Data in Collaborative Tagging Spaces. 315-322 2008 ICSC http://doi.ieeecomputersociety.org/10.1109/ICSC.2008.79 conf/semco/2008 db/conf/semco/icsc2008.html#KimPBSD08