@INPROCEEDINGS{1997-ClusteringAR,
  TITLE = {Clustering association rules},
  BOOKTITLE = {Proceedings of the 13th International Conference on Data Engineering},
  AUTHOR = {Lent, B. and Swami, A. and Widom, J.},
  PAGES = {220-231},
  ADDRESS = {Birmingham, U.K}, 
  YEAR = {1997}
}