1. EIA. Review of Emerging Resources: U.S. Shale Gas and Shale Oil Plays;U.S. Energy Information Administration:Washington, DC, July, 2011.
2. EIA. World Shale Gas Resources: An Initial Assessment of 14 Regions Outside the United States;U.S. Energy Information Administration:Washington, DC, April, 2011.
3. Seydor, S. M., Clements, E., Pantelemonitis, S., and Deshpande, V.Understanding the Marcellus Shale Supply Chain;University of Pittsburgh, Katz Graduate School of Business:Pittsburgh, PA, 2012.
4. A bridge to nowhere: methane emissions and the greenhouse gas footprint of natural gas
5. Methane emissions from natural gas production and use: reconciling bottom-up and top-down measurements