URLDate
Verified		Extra Software
Requirements
(if any)		Access
Conditions		Notes
http://dx.doi.org/10.13031/aea.32.10548DOI Link
http://elibrary.asabe.org/azdez.asp?JID=3&AID=4668[...]06/14/2016
http://elibrary.asabe.org/azdez.asp?JID=3&AID=4668[...]06/14/2016PDF Reader