?url_ver=Z39.88-2004&rft_id=10.1016%2F0167-7187(91)90003-4&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Laffont&rft.aufirst=Jean-Jacques&rft.volume=9&rft.date=1991&rft.issn=0167-7187&rft.atitle=Auction+Design+anf+Favoritism&rft.title=International+Journal+of+Industrial+Organization&rft.pages=9-42&rft.genre=article