@ARTICLE{2002-Cubegrades,
  AUTHOR = {Imielinski, T. and Khachiyan, L. and Abdulghani, A.},
  TITLE = {Cubegrades: Generalizing Association Rules},
  JOURNAL = {Data Mining and Knowledge Discovery},
  VOLUME = {6},
  NUMBER = {3},
  YEAR = {2002},
  PAGES = {219-257}
}