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   title       = {Interdisciplinary Workshop on Information and Decision in Social Networks }, 
   url         = {http://wids.lids.mit.edu/},
   biburl      = {https://puma.uni-kassel.de/url/5d8c3e769fe23df781a2c52a860ec9b5/benz},
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@electronic{flowingdata.com,
   title       = {Showing the Obama-Clinton Divide in Decision Tree Infographic | FlowingData}, 
   url         = {http://flowingdata.com/2008/04/23/showing-the-obama-clinton-divide-in-decision-tree-infographic/},
   biburl      = {https://puma.uni-kassel.de/url/1f3f9ab14135bf5ff16e99faee12e3fb/hotho},
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