@electronic{www.heise.de,
   title       = {Alternativen zum Marktführer | c't}, 
   url         = {http://www.heise.de/ct/artikel/Googlehagel-290458.html},
   biburl      = {https://puma.uni-kassel.de/url/7d37aa7bb8f299ef3e6683a2c30a8dfc/stumme},
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@electronic{www.google.de,
   title       = {Google}, 
   url         = {http://www.google.de/},
   biburl      = {https://puma.uni-kassel.de/url/1b1188c0d058153ef8dad3084a055292/stumme},
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@electronic{www.blinde-kuh.de,
   title       = {Kinder, Kids, Suchmaschine Blinde Kuh}, 
   url         = {http://www.blinde-kuh.de/},
   biburl      = {https://puma.uni-kassel.de/url/63d2a08237638878c7c4eb38257b8822/stumme},
   keywords    = {search engine suchmaschinen kuh suchmaschine blinde},
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Search Engine for Children},
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}

@electronic{www.taz.de,
   title       = {taz 3.7.06 Accoona das doch mal!}, 
   url         = {http://www.taz.de/pt/2006/07/03/a0169.1/text},
   biburl      = {https://puma.uni-kassel.de/url/595407143a621e55d6fe7be3ac1fa69d/stumme},
   keywords    = {search suchmaschinen europäisch engineering european accoona Suchmaschine},
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   description = {Die erste europäische Suchmaschine Accoona ist gerade mit sieben Sprachen ans Netz gegangen. Gefördert von Ex-Schachweltmeister Anatoli Karpow, Bill Clinton und der VR China - und made in USA},
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   intrahash   = {595407143a621e55d6fe7be3ac1fa69d}
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@electronic{de.vivisimo.com,
   title       = {Vivísimo // Vivisimo Clustering - automatische Kategorisierung- und Inhaltsintegrationsoftware}, 
   url         = {http://de.vivisimo.com/},
   biburl      = {https://puma.uni-kassel.de/url/d3a07679bee26b1f4ed01cade453737a/stumme},
   keywords    = {suchmaschinen},
   added-at    = {2006-02-03T18:07:45.000+0100},
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@electronic{citeseer.ist.psu.edu,
   title       = {Computer and Information Science Papers CiteSeer Publications ResearchIndex}, 
   url         = {http://citeseer.ist.psu.edu/},
   biburl      = {https://puma.uni-kassel.de/url/db2eed985efed0656589127083d5f6b4/stumme},
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@electronic{opac.bibliothek.uni-kassel.de,
   title       = {OPC4 UB/LMB Kassel - Search Welcome Screen}, 
   url         = {http://opac.bibliothek.uni-kassel.de/IMPLAND=Y/SRT=YOP/LNG=DU/DB=23/},
   biburl      = {https://puma.uni-kassel.de/url/5c92f4177b881bd21c16c06e494310dc/stumme},
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@electronic{scholar.google.com,
   title       = {Google Scholar}, 
   url         = {http://scholar.google.com/},
   biburl      = {https://puma.uni-kassel.de/url/73e6a584915eadf390fda8f5a78352b8/stumme},
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@electronic{www.ub.uni-konstanz.de,
   title       = {Deutschsprachige Suchmaschinen}, 
   url         = {http://www.ub.uni-konstanz.de/dt-suchm.htm},
   biburl      = {https://puma.uni-kassel.de/url/79e1bd184cfb8c42adac59dc73691118/stumme},
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