1. Congressional Research Service. U.S. Energy: overview and key statistics. Prepared by Behrens CE, Glover C. CRS Report for Congress, prepared for members and committees of congress. 7-5700 www.crs.gov R40187; 2012. Available from: http://www.fas.org/sgp/crs/misc/R40187.pdf.
2. Intergovernmental Panel on Climate Change. Climate change 2007: synthesis report. Adopted at IPCC Plenary XXVII (Valencia, Spain, 12–17 November 2007); 2007. Available from: http://www.ipcc.ch/pdf/assessment-report/ar4/syr/ar4_syr.pdf.
3. Limiting the magnitude of future climate change;National Research Council,2010
4. Energy demand, efficiency and conservation;Dowlatabadi,2011
5. Energy efficiency in buildings: behavioral issues;National Research Council,1985