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2. Lighting for Buildings, Part 2: Code of Practice for Daylighting;BSI, BS 8206-2:2008,2008
3. Climate Change Act;Legislation.gov.uk,2008
4. Low Carbon Retrofit Toolkit: A Roadmap to Success;Rhoads,2010
5. Estimating the Amount of CO2 Emissions that the Construction Industry can Influence;BIS,2010