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Krüger, C.: Evaluation des WWW-Suchdienstes GERHARD unter besonderer Beachtung automatischer Indexierung (1999)
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Westermeyer, D.: Adaptive Techniken zur Informationsgewinnung : der Webcrawler InfoSpiders (2005)
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Lehrke, C.: Architektur von Suchmaschinen : Googles Architektur, insb. Crawler und Indizierer (2005)
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