?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Jensen%2C+Erik+Sten&rft.aulast=Jensen&rft.aufirst=Erik+Sten&rft.date=2005&rft.title=Intercropping+-+the+practical+application+of+diversity%2C+competition+and+facilitation+in+arable+and+organic+cropping+systems+&rft.genre=proceeding