J. Euzenat and P. Valtchev, Similarity-based ontology alignment in OWL-Lite, Proc. of 16th ECAI, pp.333-337, 2004.
URL : https://hal.archives-ouvertes.fr/hal-00918127

P. Mika, Ontologies are us: A unified model of social networks and semantics, Proc. of 4th ISWC, pp.522-536, 2005.