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2. UNEP-SBCI, Buildings and Climate Change; Status, Challenge and Opportunities, UNEP Publication, Paris, France, 2007.
3. Indonesia Energy and Outlook and Statistic 2006, Pengkajian Energy Universitas Indonesia;Purwanto,2006
4. Indonesian Landed House Electricity Consumption, Home Design Going Green, One Day Seminar;Prianto,2007
5. Indonesian Statistical Bureau (BPS), Value of construction completed by type of construction 2001–2005, Indonesia, 2007.