@inproceedings{prange,
  author    = {Diego Pennacchioli and
               Michele Coscia and
               Salvatore Rinzivillo and
               Dino Pedreschi and
               Fosca Giannotti},
  title     = {Explaining the product range effect in purchase data},
  booktitle = {BigData Conference},
  year      = {2013},
  pages     = {648-656},
  ee        = {http://dx.doi.org/10.1109/BigData.2013.6691634}
}