?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.fcr.2015.03.018&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Hoffmann%2C+M+P&rft.aufirst=M+P&rft.aulast=Hoffmann&rft.issn=0378-4290&rft.pages=49-62&rft.atitle=Crop+modelling+based+analysis+of+site-specific+production+limitations+of+winter+oilseed+rape+in+northern+Germany&rft.volume=178&rft.title=Field+Crops+Research&rft.date=July+2015&rft.genre=article