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   title       = {Bridging the Gap between Semantic Web and Web 2.0 at ESWC 2007}, 
   url         = {http://www.kde.cs.uni-kassel.de/ws/eswc2007/},
   biburl      = {https://puma.uni-kassel.de/url/963ccc724a167ca93c6065c5590a125f/hotho},
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@electronic{workshops.socialnetworkanalysis.info,
   title       = {Joint 9th WebKDD and 1st SNA-KDD Workshop 2007 on Web Mining and Social Network Analysis}, 
   url         = {http://workshops.socialnetworkanalysis.info/websnakdd2007/},
   biburl      = {https://puma.uni-kassel.de/url/13b0dde78c32a20aa590b1e1ccf99c91/hotho},
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