@incollection{ SandholmBoutilier:CA06,
  publisher = {MIT Press},
  author = {Tuomas Sandholm and Craig Boutilier },
  title = {Preference Elicitation in Combinatorial Auctions},
  url = {elicitation.pdf},
  booktitle = {Combinatorial Auctions},
  address = {Cambridge, MA},
  editor = {P. Crampton and Y. Shoham and R. Steinberg},
  year = {2006},
  pages = {233--264}
}