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Dunning, A.: Do we still need search engines? (1999)
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Fattahi, R.; Wilson, C.S.; Cole, F.: ¬An alternative approach to natural language query expansion in search engines : text analysis of non-topical terms in Web documents (2008)
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Birmingham, J.: Internet search engines (1996)
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Notess, G.R.: Toward more comprehensive Web searching : single searching versus megasearching (1998)
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Gardner, T.; Iannella, R.: Architecture and software solutions (2000)
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Campbell, D.: Australian subject gateways : political and strategic issues (2000)
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Dempsey, L.: ¬The subject gateway : experiences and issues based on the emergence of the Resource Discovery Network (2000)
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