?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=L&rft.au=Woltering%2C+L&rft.aulast=Woltering&rft.atitle=The+economics+of+low+pressure+drip+irrigation+and+hand+watering+for+vegetable+production+in+the+Sahel&rft.title=Agricultural+Water+Management&rft.date=2011&rft.volume=99&rft.pages=67-73&rft.issue=1&rft.genre=article