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Moghaddam, A.I.; Parirokh, M.: ¬A comparative study on overlapping of search results in metasearch engines and their common underlying search engines (2006)
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Jansen, B.J.; Spink, A.; Koshman, S.: Web searcher interaction with the Dogpile.com metasearch engine (2007)
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Howe, A.E.; Dreilinger, D.: SavvySearch: a metasearch engine that learns with search engines to query (1997)
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