?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Hansen%2C+Lars+G%C3%83%C2%A5rn&rft.aulast=Hansen&rft.aufirst=Lars+G%C3%83%C2%A5rn&rft.date=2003&rft.title=Danish+organic+food+demand+-+Separability+and+Substitution+Patterns&rft.genre=proceeding