@electronic{ckan.net,
   title       = {Home - CKAN}, 
   url         = {http://ckan.net/},
   biburl      = {https://puma.uni-kassel.de/url/e683597e86fbdaea53c2b6f4bd808af5/hotho},
   keywords    = {dataset lod register semantic web},
   added-at    = {2010-10-21T20:54:54.000+0200},
   description = {},
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@electronic{www4.wiwiss.fu-berlin.de,
   title       = {State of the LOD Cloud}, 
   url         = {http://www4.wiwiss.fu-berlin.de/lodcloud/state/},
   biburl      = {https://puma.uni-kassel.de/url/16e23b10134ff884ed0bb600863e4b88/hotho},
   keywords    = {cloud data linked lod open statistics},
   added-at    = {2010-10-21T20:51:10.000+0200},
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