1. Hong Kong Energy Statistics Annual Report. Census and Statistics Department, Hong Kong SAR, China; 1979–2006. http://www.censtatd.gov.hk.
2. Hong Kong Monthly Digest of Statistics. Census and Statistics Department, Hong Kong SAR, China; 1979–2006. http://www.censtatd.gov.hk.
3. Intergovernmental Panel on Climate Change (IPCC) Working Group I: The physical basis of climate change; 2007. http://ipcc-wg1.ucar.edu/wg1/wg1-report.html/.
4. The applicability of PRISM to electric heating and cooling;Stram;Energ Buildings,1986
5. Assessment of the energy savings due to the building retrofit;Zmeureanu;Build Environ,1990