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Boyce, B.R.; McLain, J.P.: Entry point depth and online search using a controlled vocabulary (1989)
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Srinivasan, P.: Optimal document-indexing vocabulary for MEDLINE (1996)
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Dubois, C.P.R.: Free text vs. controlled vocabulary; a reassessment (1987)
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Lin, X.: Designing a visual interface for online searching (1999)
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Horn, M.E.: "Garbage" in, "refuse and refuse disposal" out : making the most of the subject authority file in the OPAC (2002)
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