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Croft, W.B.; Metzler, D.; Strohman, T.: Search engines : information retrieval in practice (2010)
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Research and advanced technology for digital libraries : 11th European conference, ECDL 2007 / Budapest, Hungary, September 16-21, 2007, proceedings (2007)
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Gaus, W.: Dokumentations- und Ordnungslehre : Theorie und Praxis des Information Retrieval (2005)
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