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Alexander, M.: Automatic indexing of document images using Excalibur EFS (1995)
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Alexander, M.: Digitising books, manuscripts and scholarly materials : preparation, handling, scanning, recognition, compression, storage formats (1998)
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Townsend, J.: Multimedia - myth or reality? (1994)
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Picture content retrieval (1996)
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Brown, S.: Developments in information retrieval systems : RetrievalWare from Excalibur (1996)
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