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Rahmstorf, G.: Information retrieval using conceptual representations of phrases (1994)
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Bonnevie, E.: Dretske's semantic information theory and meta-theories in library and information science (2001)
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Ingwersen, P.; Wormell, I.: Ranganathan in the perspective of advanced information retrieval (1992)
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Huang, M.-h.: Five fundamental concepts in information retrieval (1996)
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King, B.E.; Reinold, K.: Finding the concept, not just the word : a librarian's guide to ontologies and semantics (2008)
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