Silvana Castano Alfio Ferrara Stefano Montanelli Matching Ontologies in Open Networked Systems: Techniques and Applications. 25-63 2006 journals/jods/2006-5 J. Data Semantics V http://dx.doi.org/10.1007/11617808_2 db/journals/jods/jods5.html#CastanoFM06