?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Fraysse&rft.aufirst=Jean&rft.date=1991&rft.title=Spatial+Competition+and+Differenciation&rft.btitle=Dynamics%2C+Incomplete+Information+and+Industrial+Economics&rft.genre=bookitem