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Sormunen, E.: Free-text searching in full-text databases : probing system limits (1993) 9.30

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Author: Sormunen, E.

Järvelin, K.; Kristensen, J.; Niemi, T.; Sormunen, E.; Keskustalo, H.: ¬A deductive data model for query expansion (1996) 9.30

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Author: Sormunen, E.