@incollection{ Pu10,
  chapter = {21},
  publisher = {Springer},
  author = {Pearl Pu and Boi Faltings and Li Chen and Jiyong Zhang and Paolo Viappiani},
  booktitle = {Handbook on Recommender Systems (TO APPEAR)},
  title = {Usability Guidelines for Product Recommenders based on Example Critiquing Research},
  editor = {Kantor, P.B., Ricci, F., Rokach L. and Shapira B.},
  year = {2010}
}