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Micco, M.; Smith, I.; Hsiao, S.A.; Intaravitak, S.: Knowledge representation : subject analysis (1987)
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Pole, T.: Contextual classification in the Metadata Object Manager (M.O.M.) (1999)
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Liu, Y.-H.; Dantzig, P.; Sachs, M.; Corey, J.T.; Hinnebusch, M.T.; Damashek, M.; Cohen, J.: Visualizing document classification : a search aid for the digital library (2000)
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Heidorn, P.B.: Image retrieval as linguistic and nonlinguistic visual model matching (1999)
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