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White, H.D.: Relevance in theory (2009)
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Huang, M.-h.: Five fundamental concepts in information retrieval (1996)
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Kipp, M.E.I.; Campbell, D.G.: Searching with tags : do tags help users find things? (2010)
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Xu, Y.; Yin, H.: Novelty and topicality in interactive information retrieval (2008)
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Saracevic, T.: Effects of inconsistent relevance judgments on information retrieval test results : a historical perspective (2008)
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