@electronic{www.mobenzi.com,
   title       = {Mobenzi}, 
   url         = {http://www.mobenzi.com/},
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   keywords    = {crowdsourcing handy mechanical_turk mobenzi mobile mobile_phone software},
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@electronic{www.scienceblogs.de,
   title       = {Intelligente Kreativit�t ist reduzierbar komplex | Geograffitico | ScienceBlogs.de - Wissenschaft, Kultur, Politik}, 
   url         = {http://www.scienceblogs.de/geograffitico/2011/02/intelligente-kreativitat-ist-reduzierbar-komplex.php},
   biburl      = {https://puma.uni-kassel.de/url/d9515fc712a46e35bd605229010d4faa/stumme},
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@electronic{www.ideaken.com,
   title       = {ideaken - collaborate to innovate - Mozilla Firefox}, 
   url         = {http://www.ideaken.com/},
   biburl      = {https://puma.uni-kassel.de/url/d187ea79936ccf1f938734bdd7b29497/stumme},
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