Harry Halpin David J. Zielinski Rachael Brady Glenda Kelly Exploring Semantic Social Networks Using Virtual Reality. 599-614 2008 International Semantic Web Conference http://dx.doi.org/10.1007/978-3-540-88564-1_38 conf/semweb/2008 db/conf/semweb/iswc2008.html#HalpinZBK08