?url_ver=Z39.88-2004&rft_id=10.1016%2F0022-1694(87)90003-5&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Kovacs%2C+G.&rft.aulast=Kovacs&rft.aufirst=G.&rft.issue=3-4&rft.volume=95&rft.date=30+November+1987&rft.issn=00221694&rft.atitle=Estimation+of+average+areal+evapotranspiration+%E2%80%94+Proposal+to+modify+Morton's+model+based+on+the+complementary+character+of+actual+and+potential+evapotranspiration&rft.title=Journal+of+Hydrology&rft.pages=227-240&rft.genre=article