?url_ver=Z39.88-2004&rft_id=10.1061%2F(ASCE)0733-9496(2005)131%3A2(81)&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=T.L.&rft.aulast=Ng&rft.au=Ng%2C+T.L.&rft.issue=2&rft.volume=131&rft.issn=07339496&rft.atitle=Effects+of+discharge+permit+trading+on+water+quality+reliability&rft.pages=81-88&rft.title=Journal+of+Water+Resources+Planning+and+Management&rft.date=2005&rft.genre=article