@Incollection{Atzmueller:11,
  author = {Atzmueller, Martin},
  title  = {Data Mining},

  year   = {2011},
  number = {},
  url    = {},

  const  = {\ text}
}
@Incollection{ABP:11,
  author = {Atzmueller, Martin and Beer, Stephanie and Puppe, Frank},
  title  = {Data Mining, Validation and Collaborative Knowledge Capture},

  year   = {2011},
  number = {},
  url    = {},

  const  = {\ text}
}