1. US Energy Information Administration Annual Energy Outlook 2012 (Department of Energy, 2012).
2. Farese, P., Gelman, R. & Hendron, R. A Tool to Prioritize Energy Efficiency Investments (National Renewable Energy Laboratory, in the press).
3. Real Prospects for Energy Efficiency in the United States (National Academies Press, 2009).
4. Jenkins, J., Nordhaus, T. & Shellenberger, M. Energy Emergence: Rebound & Backfire as Emergent Phenomena (Breakthrough Institute, 2011).
5. Sorrell, S., Dimitropoulos, J. & Sommerville, M. Energy Policy 37, 1356–1371 (2009).