Ahmed Alasoud Volker Haarslev Nematollaah Shiri A Multi-level Matching Algorithm for Combining Similarity Measures in Ontology Integration. 1-17 2006 conf/odbis/2006 ODBIS http://dx.doi.org/10.1007/978-3-540-75474-9_1 db/conf/odbis/odbis2006.html#AlasoudHS06