?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Cremer&rft.aufirst=Helmuth&rft.date=2004&rft.title=Entr%C3%A9e+et+concurrence+sur+le+march%C3%A9+postal%2C+M%C3%A9thodologie+pour+la+construction+de+sc%C3%A9narios+d'entr%C3%A9e&rft.btitle=Economie+Postale+%3A+les+Fondements&rft.genre=bookitem