1. IPCC Climate Change 2014: Mitigation of Climate Change (eds Edenhofer, O. et al.) (Cambridge Univ. Press, 2014).
2. Buildings and Climate Change: Summary for Decision-Makers DTI/1240/PA (UNEP, 2009).
3. National Research Council Real Prospects for Energy Efficiency in the United States (National Academies, 2010).
4. Energy Star Facts and Stats 2015 (EPA, 2015);
www.energystar.gov/buildings/about-us/facts-and-stats
5. Green Building Facts (USGBC, 2015);
http://stg.usgbc.org/articles/green-building-facts