@electronic{www.ontologymatching.org,
   title       = {Publications}, 
   url         = {http://www.ontologymatching.org/publications.html},
   biburl      = {https://puma.uni-kassel.de/url/4ce2f1bbbf7b4d35a5174c7ba480d83c/hotho},
   keywords    = {matching ontology survey},
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@electronic{www.computerposter.ch,
   title       = {Das Poster - Le Poster – The Poster - Il Poster}, 
   url         = {http://www.computerposter.ch/},
   biburl      = {https://puma.uni-kassel.de/url/0031bdeb0bf97f1912e6268e0a04cfb6/hotho},
   keywords    = {computer geschichte history informatik survey überblick},
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}

@electronic{semanticweb.org,
   title       = {KWTR: Ontology Learning - semanticweb.org}, 
   url         = {http://semanticweb.org/wiki/KWTR:_Ontology_Learning},
   biburl      = {https://puma.uni-kassel.de/url/6cdf2612793e7824a0b49a599509a73e/hotho},
   keywords    = {ol survey tools},
   added-at    = {2010-02-07T14:41:46.000+0100},
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@electronic{blog.magix.com,
   title       = {MAGIX Blog - Das deutsche Social Media Prisma}, 
   url         = {http://blog.magix.com/de/archives/783-Das-deutsche-Social-Media-Prisma.html},
   biburl      = {https://puma.uni-kassel.de/url/aecc853825bcdd5b1f44f5da386fc043/hotho},
   keywords    = {landscape landschaft media social survey überblick},
   added-at    = {2009-09-22T14:09:51.000+0200},
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@electronic{www.mymediaproject.org,
   title       = {Public Deliverables}, 
   url         = {http://www.mymediaproject.org/Deliverables.aspx},
   biburl      = {https://puma.uni-kassel.de/url/cf302f23aa53dc5f820050ba0bb7b899/hotho},
   keywords    = {recommender state_of_the_art survey},
   added-at    = {2009-06-24T14:07:51.000+0200},
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