1. NASA Goddard Institute for Space Studies (n.d.). GISS Surface Temperature Analysis. Accessed November 30, 2010.
2. NRE (2010) National renewable energy laboratory. URL www.nrel.gov .
3. de Vries RP (2010) Green chips: A new era for the semiconductor industry. In: Proc. IEEE 2010 Custom Integrated Circuits Conf.
4. EER (2010) The office of energy efficiency and renewable energy. URL www.eere.energy.gov .
5. TOP 500 SUPERCOMPUTER SITES, http://www.top500.org/list/2013/06 (accessed December 12, 2013).