?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=%C3%83%C2%98sterg%C3%83%C2%A5rd%2C+Hanne&rft.aulast=%C3%83%C2%98sterg%C3%83%C2%A5rd&rft.aufirst=Hanne&rft.date=2006&rft.title=Genetic+potential+for+grain+yield+in+spring+barley+varieties+and+variety+mixtures+in+variable+organic+environments&rft.genre=proceeding