1. http://buildingsdatabook.eren.doe.gov/TableView.aspx?table=1.1.1, U.S. residential and commercial buildings total primary energy consumption (quadrillion btu and percent of total) .
2. http://buildingsdatabook.eren.doe.gov/TableView.aspx?table=1.1.3. Buildings share of U.S. primary energy consumption (percent).
3. http://buildingsdatabook.eren.doe.gov/TableView.aspx?table=1.1.9. Buildings share of U.S. electricity consumption (percent).
4. Annual energy outlook 2014;U. EIA,2014
5. Advanced control strategies for heating, ventilation, air-conditioning, and refrigeration systemsAn overview: Part I: hard control;Naidu;HVAC R Res,2011