?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Vassallo+Magro%2C+Jos%C3%A9+Manuel&rft.aufirst=Jos%C3%A9+Manuel&rft.aulast=Vassallo+Magro&rft.date=2010&rft.title=Flexible-Term+Highway+Concessions.+How+Can+They+Work+Better%3F&rft.btitle=Proceedings+of+the+TRB+89th+Annual+Meeting+of+the+Transportation+Reseach+Board&rft.genre=proceeding