?url_ver=Z39.88-2004&rft_id=10.1061%2F(ASCE)0733-9496(1984)110%3A4(403)&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Hughes%2C+T.C.&rft.aulast=Hughes&rft.aufirst=T.C.&rft.issue=4&rft.volume=110&rft.date=October+1984&rft.issn=0733-9496&rft.atitle=Salt+Gradient+Ponds%3A+Investment+Timing+Model&rft.title=Journal+of+Water+Resources+Planning+and+Management&rft.pages=403-417&rft.genre=article