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Spink, A.; Wolfram, D.; Jansen, B.J.; Saracevic, T.: Searching the Web : the public and their queries (2001)
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Spink, A.; Saracevic, T.: Where do the search terms come from? (1992)
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Lewandowski, D.: ¬The retrieval effectiveness of web search engines : considering results descriptions (2008)
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