@Inproceedings{bastide00levelwise,
  author = {Bastide, Y. and Taouil, R. and Pasquier, N. and Stumme, G. and Lakhal, L.},
  title  = {Levelwise Search of Frequent Patterns},

  year   = {2000},
  number = {},
  url    = {http://www.kde.cs.uni-kassel.de/stumme/papers/2000/BDA00.pdf},

  const  = {\ text}
}
@Techreport{stumme99conceptualknowledge,
  author = {Stumme, G.},
  title  = {Conceptual Knowledge Discovery with Frequent Concept Lattices},

  year   = {1999},
  number = {},
  url    = {http://www.kde.cs.uni-kassel.de/stumme/papers/1999/P2043.pdf},

  const  = {\ text}
}