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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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Gerber, A.: Vergleich von Suchmaschinen und Katalogen : Schwerpunkt deutschsprachiger Suchmaschinen Stand 2002 (2002)
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Stölzel, A.: Was Google nicht sieht : Das "Invisible Web" (2004)
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