?url_ver=Z39.88-2004&rft_id=10.1016%2FS0014-2921(99)00043-4&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Laffont&rft.aufirst=Jean-Jacques&rft.issue=4-6&rft.volume=44&rft.date=May+2000&rft.issn=0014-2921&rft.atitle=Cross-Subsidies+and+Network+Expansion+in+Developing+Countries&rft.title=European+Economic+Review&rft.pages=797-805&rft.genre=article