@ARTICLE{2004-ACM-CZhang,
  AUTHOR = {Wu, X. and Zhang, C. and Zhang, S.},
  TITLE = {Efficient mining of both positive and negative association rules},
  JOURNAL = {ACM Transactions on Information Systems},
  VOLUME = {22},
  NUMBER = {3},
  YEAR = {2004},
  PAGES = {381 - 405}
}