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Keen, E.M.: Designing and testing an interactive ranked retrieval system for professional searchers (1994)
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Keen, M.: Query reformulation in ranked output interaction (1994)
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Keen, M.: Interactive ranked retrieval using multiple match methods (1995)
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Hancock-Beaulieu, M.; Walker, S.: ¬An evaluation of automatic query expansion in an online library catalogue (1992)
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Skov, M.; Larsen, B.; Ingwersen, P.: Inter and intra-document contexts applied in polyrepresentation for best match IR (2008)
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