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Su, L.T.: ¬A comprehensive and systematic model of user evaluation of Web search engines : I. Theory and background (2003)
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Su, L.T.: ¬The relevance of recall and precision in user evaluation (1994)
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White, H.D.: Relevance in theory (2009)
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Tague, J.; Schultz, R.: Evaluation of the user interface in an information retrieval system : a model (1989)
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