@electronic{www.uic.edu,
   title       = {Scientometrics 2.0 Toward new metrics of scholarly impact on the social web}, 
   url         = {http://www.uic.edu/htbin/cgiwrap/bin/ojs/index.php/fm/article/view/2874/2570},
   biburl      = {https://puma.uni-kassel.de/url/5fcb0c866b481988e6f82d16e5b6efe0/stephandoerfel},
   keywords    = {citation elsevier evaluation index item quality recommender research scientometrics toRead},
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@electronic{t3n.de,
   title       = {Twitter: Warum die Twitter-Suche keine „alten“ Tweets anzeigt (und wie man sie trotzdem findet) » t3n News}, 
   url         = {http://t3n.de/news/twitter-suche-265094/},
   biburl      = {https://puma.uni-kassel.de/url/20deea3608f8b479601279abbd9c67ef/stephandoerfel},
   keywords    = {index search suche tweets twitter},
   added-at    = {2011-09-02T15:11:16.000+0200},
   description = {Wer sich via Twitter Search auf die Suche nach alten Tweets macht, kann zur Zeit keine großen Sprünge in die Vergangenheit erwarten. Themen, die mehr als eine Woche alt sind,},
   interhash   = {20deea3608f8b479601279abbd9c67ef}, 
   intrahash   = {20deea3608f8b479601279abbd9c67ef}
}

@electronic{www.matheboard.de,
   title       = {Eigene math. Operatoren}, 
   url         = {http://www.matheboard.de/archive/10096/thread.html},
   biburl      = {https://puma.uni-kassel.de/url/cc03021f5a0e0d1d1dc6d036f2ea28e1/stephandoerfel},
   keywords    = {DeclareMathOperator index latex math mathoperator operator tip tipp tipps tool tutorial},
   added-at    = {2011-01-26T17:07:29.000+0100},
   description = {Hilfe zu Eigene math. Operatoren .},
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   intrahash   = {cc03021f5a0e0d1d1dc6d036f2ea28e1}
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