1. Report to Congress on Server and Data Center Energy Efficiency. Available from: http://www.energystar.gov/ia/partners/prod_development/downloads/EPA_Da tacen-ter_Report_Congress_Final1.pdf.
2. SWaP (Space, Watts and Performance) Metric. Web Page. Available from: http://www.sun.com/servers/coolthreads/swap/.
3. Green IT definition. Webpage, May 2008. Available from: http://en.wikipedia.org/wiki/Green_computing .
4. Green IT definition. Webpage, May 2008. Available from: http://thefutureofthings.com/articles / 1003/green-computing.html .
5. Green IT definition. Webpage, May 2008. Available from: http://www.webopedia.com/TERM/G/Green_IT.html.