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Venditto, G.: Search engine showdown : IW Labs tests seven Internet search tools (1996)
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Koehler, W.C.: Internet search note : specialized retrieval and Web search engines (1997)
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Spink, A.; Park, M.; Jansen, B.J.; Pedersen, J.: Elicitation and use of relevance feedback information (2006)
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DeZelar-Tiedman, C.: Known-item searching on the World Wide Web (1997)
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Courlois, M.P.: Cool tools for Web searching : an update (1996)
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