McDonald-Buller, Elena C, David T Allen, Nancy J Brown, Daniel J Jacob, Daniel Jaffe, Charles E Kolb, Allen S Lefohn, Samuel J Oltmans, David D Parrish, Greg Yarwood, and Lin Zhang. "Establishing Policy Relevant Background (PRB) Ozone Concentrations in the United States." Environmental Science & Technology 45.22 (2011) 9484–9497. DOI | Google Scholar | BibTeX | Endnote tagged