@inproceedings{boulicaut00approximation,
  address = {London, UK},
  author = {Boulicaut, Jean-Francois and Bykowski, Artur and Rigotti, Christophe},
  booktitle = {PKDD '00: Proceedings of the 4th European Conference on Principles
    of Data Mining and Knowledge Discovery},
  interhash = {7b3e7b0c982db3afa3b6633cade025b4},
  intrahash = {bee9235aa41ea2dd621fd477a4dd472b},
  isbn = {3-540-41066-X},
  pages = {75--85},
  publisher = {Springer-Verlag},
  title = {Approximation of Frequency Queries by Means of Free-Sets},
  year = 2000
}

@inproceedings{Bykowski01condensed,
  author = {Bykowski, Artur and Rigotti, Christophe},
  booktitle = {PODS},
  ee = {http://www.acm.org/sigs/sigmod/pods/proc01/online/p130.pdf},
  interhash = {e846c36eb24ff1c8cfbf99e6997854dc},
  intrahash = {3346a948ddb128037306969a0a202a5b},
  title = {A condensed representation to find frequent patterns.},
  url = {http://dblp.uni-trier.de/db/conf/pods/pods2001.html#BykowskiR01},
  year = 2001
}

@article{Boulicaut03free,
  author = {Boulicaut, Jean-Fran�ois and Bykowski, Artur and Rigotti, Christophe},
  ee = {http://ai.ijs.si/informatica/vols/vol28_1_04abs.html#5},
  interhash = {106f95be16f08e44f94a05b71b4d1369},
  intrahash = {b20449b2d5c15bd2d9bdd08e3889afab},
  journal = {Data Min. Knowl. Discov.},
  number = 1,
  pages = {5-22},
  title = {Free-Sets: A Condensed Representation of Boolean Data for the Approximation
    of Frequency Queries.},
  url = {http://dblp.uni-trier.de/db/journals/datamine/datamine7.html#BoulicautBR03},
  volume = 7,
  year = 2003
}

@inproceedings{Boulicaut00approximation,
  author = {Boulicaut, Jean-Fran�ois and Bykowski, Artur and Rigotti, Christophe},
  booktitle = {PKDD},
  ee = {http://link.springer.de/link/service/series/0558/bibs/1910/19100075.htm},
  interhash = {bcaa8a570d6b987b6171c4b7aff7cacd},
  intrahash = {7235b0afd136e65466a215df38510a38},
  pages = {75-85},
  title = {Approximation of Frequency Queris by Means of Free-Sets.},
  url = {http://dblp.uni-trier.de/db/conf/pkdd/pkdd2000.html#BoulicautBR00},
  year = 2000
}

@inproceedings{boulicaut00approximation,
  author = {Boulicaut, Jean-Francois and Bykowski, Artur and Rigotti, Christophe},
  booktitle = {Principles of Data Mining and Knowledge Discovery},
  interhash = {bcaa8a570d6b987b6171c4b7aff7cacd},
  intrahash = {7e53b931a9ba3d36c7536f31901376bf},
  pages = {75-85},
  title = {Approximation of Frequency Queris by Means of Free-Sets},
  url = {citeseer.ist.psu.edu/boulicaut00approximation.html},
  year = 2000
}