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Wolf, S.: Google auf dem Weg zum Monopol? : Aktuelle Entwicklungen bei Internetsuchmaschinen: Märkte, Technologien und die Rolle der Bibliotheken (2003)
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Wolf, S.: Konkurrenz bei der wissenschaftlichen Recherche (2005)
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Summann, F.; Wolf, S.: BASE-Suchmaschinentechnologie für digitale Bibliotheken (2005)
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Summann, F.; Wolf, S.: Suchmaschinentechnologie und wissenschaftliche Suchumgebung : Warum braucht man eine wissenschaftliche Suchmaschine? (2006)
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