?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Yang%2C+H&rft.aufirst=H&rft.aulast=Yang&rft.issue=6224&rft.issn=1095-9203&rft.date=20+February+2015&rft.title=Science&rft.volume=347&rft.atitle=Enforcement+key+to+China's+environment&rft.pages=834-835&rft.genre=article