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2. Energy Information Administration;Residential Energy Consumption Survey (RECS),2005
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4. Consumers Preferences for Improving Energy Consumption Feedback;Roberts,2003
5. Annual Energy Outlook (AEO) 2008. Energy Information Administration, US Department of Energy. Report No. DOE/EIA-0383, 2008. Supplemental Table 21. http://www.eia.doe.gov/oiaf/archive/aeo08/supplement/supref.html.