1. Trucost. http://www.trucost.com/methodology
2. World Commission on Environmental and Development (WCED) (1987) Our Common Future. Oxford University Press, New York
3. IEEE Gold Book 493 (2007) Design of Reliable Industrial and Commercial Power Systems
4. (2009) Microsoft—creating a greener data center. http://www.microsoft.com/presspass/features/2009/apr09/04-02Greendatacenters.mspx
5. (2009) Technology and policy recommendations and gols for: Reducing carbon dioxide emissions in the energy sector. Tech. rep, ASME General Position Statement