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Hersh, W.R.; Hickam, D.H.: ¬A comparison of two methods for indexing and retrieval from a full-text medical database (1992)
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Heidorn, P.B.: Image retrieval as linguistic and nonlinguistic visual model matching (1999)
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Rasmussen, E.M.: Indexing images (1997)
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Meadows, J.: Purposes and practices of text retrieval (1992)
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