@Article{hereth03conceptual,
  author = {Hereth, Joachim and Stumme, Gerd and Wille, Rudolf and Wille, Uta},
  title  = {Conceptual Knowledge Discovery - a Human-Centered Approach},
  journal = {Journal of Applied Artificial Intelligence (AAI)},
  year   = {2003},
  number = {3},
  url    = {http://www.kde.cs.uni-kassel.de/stumme/papers/2003/hereth2003conceptual.pdf},

  const  = {\ text}
}
@Inproceedings{jaschke2013attribute,
  author = {Jäschke, Robert and Rudolph, Sebastian},
  title  = {Attribute Exploration on the Web},

  year   = {2013},
  number = {},
  url    = {http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-113133},

  const  = {\ text}
}