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Ornager, S.: ¬The image database : a need for innovative indexing and retrieval (1994)
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Lunin, L.F.: Image databases : frontierland (1989)
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Hidderley, R.; Rafferty, P.: Democratic indexing : an approach to the retrieval of fiction (1997)
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Ornager, S.: View a picture : theoretical image analysis and empirical user studies on indexing and retrieval (1996)
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