?url_ver=Z39.88-2004&rft_id=121%2C+October+2013%2C+Pages+53%E2%80%9362&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=N+C&rft.au=Turner%2C+N+C&rft.aulast=Turner&rft.atitle=Simulation+analysis+of+factors+affecting+sorghum+yield+at+selected+sites+in+eastern+and+southern+Africa%2C+with+emphasis+on+increasing+temperatures&rft.title=Agricultural+Systems&rft.issn=0308-521X&rft.date=2013&rft.volume=121&rft.pages=53-62&rft.genre=article