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Schmitz-Esser, W.: Language of general communication and concept compatibility (1996)
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Giunchiglia, F.; Villafiorita, A.; Walsh, T.: Theories of abstraction (1997)
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Priss, U.: Faceted knowledge representation (1999)
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Järvelin, K.; Kristensen, J.; Niemi, T.; Sormunen, E.; Keskustalo, H.: ¬A deductive data model for query expansion (1996)
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Priss, U.: Description logic and faceted knowledge representation (1999)
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Noy, N.F.: Knowledge representation for intelligent information retrieval in experimental sciences (1997)
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