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Wolfram, D.: Search characteristics in different types of Web-based IR environments : are they the same? (2008)
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- Information processing and management. 44(2008) no.3, S.1279-1292
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Zhang, J.; Wolfram, D.; Wang, P.: Analysis of query keywords of sports-related queries using visualization and clustering (2009)
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- Journal of the American Society for Information Science and Technology. 60(2009) no.8, S.1550-1571