?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.jenvman.2014.01.046&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Hoang%2C+Vincent&rft.aufirst=Vincent&rft.aulast=Hoang&rft.volume=137&rft.atitle=Analysis+of+resource+efficiency%3A+A+production+frontier+approach&rft.date=2014&rft.title=Journal+of+Environmental+Management&rft.issn=0301-4797&rft.genre=article