?url_ver=Z39.88-2004&rft_id=10.1080%2F07900627.2016.1225570&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=S+A&rft.au=Wheeler%2C+S+A&rft.aulast=Wheeler&rft.atitle=An+overview+of+extension+use+in+irrigated+agriculture+and+case+studies+in+south-eastern+Africa&rft.title=International+Journal+of+Water+Resources+Development&rft.issn=0790-0627&rft.date=2017&rft.volume=33&rft.pages=755-769&rft.issue=5&rft.genre=article