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Harper, D.J.: Relevance feedback in document retrieval (1980)
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Croft, W.B.; Harper, D.J.: Using probabilistic models of document retrieval without relevance information (1979)
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Hendry, D.G.; Harper, D.J.: Coordinating information-seeking on interactive displays : a study in retrieval modelling and image indexing (1995)
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Jose, J.M.; Harper, D.J.: ¬An integrated approach to image retrieval (1995)
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Hendry, D.G.; Harper, D.J.: ¬An informal information-seeking environment (1997)
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Muresan, G.; Harper, D.J.: Topic modeling for mediated access to very large document collections (2004)
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Kelly, D.; Harper, D.J.; Landau, B.: Questionnaire mode effects in interactive information retrieval experiments (2008)
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