?url_ver=Z39.88-2004&rft_id=doi%3A10.1088%2F1748-9326%2F8%2F1%2F014017&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Litovitz%2C+Aviva&rft.aulast=Litovitz&rft.aufirst=Aviva&rft.issue=1&rft.volume=8&rft.date=January+2013&rft.issn=1748-9326&rft.atitle=Estimation+of+regional+air-quality+damages+from+Marcellus+Shale+natural+gas+extraction+in+Pennsylvania&rft.title=Environmental+Research+Letters&rft.pages=014017&rft.genre=article