@electronic{www.sigkdd.org,
   title       = {KDD 2008}, 
   url         = {http://www.sigkdd.org/kdd2008/},
   biburl      = {https://puma.uni-kassel.de/url/c26fe5ae58f0c58dfaeff40c5193f59a/stumme},
   keywords    = {2008 KDD conference conferences deadline deadlines},
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@electronic{www-faculty.cs.uiuc.edu,
   title       = {Han and Kamber: Data Mining---Concepts and Techniques, 2nd ed., Morgan Kaufmann, 2006}, 
   url         = {http://www-faculty.cs.uiuc.edu/~hanj/bk2/slidesindex.html},
   biburl      = {https://puma.uni-kassel.de/url/7f046d667d25f6f53d413149bb40d258/stumme},
   keywords    = {Data folien book buch kdd mining Mining slides},
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