John Keeney Dominic Jones Dominik Roblek David Lewis Declan O'Sullivan Improving Scalability in Pub-Sub Knowledge-Based Networking by Semantic Clustering. 19-20 2007 conf/otm/2007-w1 OTM Workshops (1) http://dx.doi.org/10.1007/978-3-540-76888-3_10 db/conf/otm/otm2007-w1.html#KeeneyJRLO07