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Balakrishnan, U,; Soergel, D.; Helfer, O.: Representing concepts through description logic expressions for knowledge organization system (KOS) mapping (2020)
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Soergel, D.: Towards a relation ontology for the Semantic Web (2011)
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Soergel, D.: SemWeb: proposal for an open, multifunctional, multilingual system for integrated access to knowledge about concepts and terminology (1996)
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