@electronic{springerlink.metapress.com,
   title       = {Network Analysis Buch (Brandes)}, 
   url         = {http://springerlink.metapress.com/content/nv20c2jfpf28/#section=589791&page=1&locus=0},
   biburl      = {https://puma.uni-kassel.de/url/af3543a90a5c739deaa5e8dceb5d5260/stephandoerfel},
   keywords    = {analysis brandes ebook folksonomy network sna social},
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@electronic{www.wipo.int,
   title       = {(WO/2006/116196) MEDIA OBJECT METADATA ASSOCIATION AND RANKING}, 
   url         = {http://www.wipo.int/pctdb/en/wo.jsp?WO=2006%2F116196&IA=WO2006%2F116196&DISPLAY=STATUS},
   biburl      = {https://puma.uni-kassel.de/url/27088909ab209640d410793579a7dafa/hotho},
   keywords    = {analysis association clustering folksonomy rules tag toread},
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@electronic{xxx.lanl.gov,
   title       = {Semiotic dynamics and collaborative tagging}, 
   url         = {http://xxx.lanl.gov/abs/cs.CY/0605015},
   biburl      = {https://puma.uni-kassel.de/url/f18a4978744fb4bb1587b97afe813e9b/hotho},
   keywords    = {folksonomy tagging analysis},
   added-at    = {2006-06-30T14:07:30.000+0200},
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   interhash   = {f18a4978744fb4bb1587b97afe813e9b}, 
   intrahash   = {f18a4978744fb4bb1587b97afe813e9b}
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@electronic{arxiv.org,
   title       = {Folksonomy s a complex network}, 
   url         = {http://arxiv.org/PS_cache/cs/pdf/0509/0509072.pdf},
   biburl      = {https://puma.uni-kassel.de/url/2c6038502c5768ba69fe4d4c49943283/hotho},
   keywords    = {social folksonomy analysis network},
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