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Krötzsch, M.; Hitzler, P.; Ehrig, M.; Sure, Y.: Category theory in ontology research : concrete gain from an abstract approach (2004 (?))
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Euzenat, J.; Bach, T.Le; Barrasa, J.; Bouquet, P.; Bo, J.De; Dieng, R.; Ehrig, M.; Hauswirth, M.; Jarrar, M.; Lara, R.; Maynard, D.; Napoli, A.; Stamou, G.; Stuckenschmidt, H.; Shvaiko, P.; Tessaris, S.; Acker, S. Van; Zaihrayeu, I.: State of the art on ontology alignment (2004)
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Ehrig, M.; Studer, R.: Wissensvernetzung durch Ontologien (2006)
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