1. A report by the DRI McGraw Energy Group of Lexington and Atmospheric and Environmental Research Inc, of Cambridge, MA, USA,1989
2. Electric Power Research Institute, Residential End-Use Energy Planning System (REEPS), EPRI EA-2512, Palo Alto, CA, USA.
3. American Council for an Energy-Efficient Economy (ACEEE), The Most Energy-Efficient Appliances: 1989–1990 Edition, Washington, DC, USA; the REEPS model, ibid; and the requirements of the National Appliance Energy Conservation Act of 1987.
4. Op cit, Ref 2.