?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Laffont&rft.aufirst=Jean-Jacques&rft.date=1975&rft.issn=0373-2630&rft.atitle=Information+Asym%C3%A9trique+et+Th%C3%A9orie+de+l'%C3%89quilibre&rft.title=Revue+d'Economie+Politique&rft.genre=article