1. NASA (2009)
http://www.nasa.gov/news/index.html
2. NASA (2010)
http://www.nasa.gov/centers/glenn/images/content/272677main_FSP_HR.jpg
3. NASA (2010) Radiation shielding for a lunar base. Final Report, Washington
4. Cosmosmagazine (2010)
http://www.cosmosmagazine.com/features/online/2760/nuclear-power-moon
5. NASA (2008)
http://www.nasa.gov/home/hqnews/2008/sep/HQ_08-227_Moon
_Power.html