1. Protocol for measuring energy use and reporting greenhouse gas emissions from building operations;UNEP-SBCI,2008
2. World energy consumption by sector;IEA,2009
3. The LEED reference guide for green building design and construction for the design, construction and major renovations of commercial and institutional building;United States Green Building Council [USGBC],2009
4. Making EU the most energy-efficient economy in the world;Turmes,2005
5. Climate change 2007: mitigation of climate change. Contribution of working group III to the fourth assessment report of the intergovernmental panel on climate change;IPCC,2007