@inproceedings{ CALDERSPKDD03,
  title = {Minimal $k$-Free Representations of Frequent Sets},
  author = {Calders, T. and Goethals, B.},
  booktitle = PKDDproc,
  year = {2003},
  pages = {71--82},
  pdf = { http://www.adrem.ua.ac.be/bibrem/pubs/CALDERSPKDD03.pdf },
  groups = {adrem-published,datamining}
}