@INPROCEEDINGS{1999-ACMSIGKDD-Han,
  TITLE = {Breaking the Barrier of Transactions: Mining Inter-Transaction Association Rules},
  BOOKTITLE = {Proceedings of the 5th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining},
  AUTHOR = {Tung, A.K.H. and Lu, H. and Han, J. and Feng, L.},
  PAGES = {297-301},
  ADDRESS = {San Diego, CA, USA}, 
  YEAR = {1999}
}