Qianhui Althea Liang Herman Lam Web Service Matching by Ontology Instance Categorization. 202-209 2008 IEEE SCC (1) http://doi.ieeecomputersociety.org/10.1109/SCC.2008.133 conf/IEEEscc/2008 db/conf/IEEEscc/scc2008.html#LiangL08