A special thanks to:

Einstein's Big Idea. june 2005. Nova. 21 Nov. 2005 <http://www.pbs.org/wgbh/nova/einstein/relativity/>.

, . Chemistry Principles and Reactions. : Saunders College, 1989.( 879-906)

"Albert Einstein." Albert Einstein - Wikipedia, the free encyclopedia. 21 Nov 2005. 21 Nov. 2005 <http://en.wikipedia.org/wiki/Einstein>.

"The Nuclear Age." 1996. American Institute of Physics. 01 Dec. 2005 <http://www.aip.org/history/einstein/nuclear1.htm>.

Reinhardt, Joachim. "Pictures of Albert Einstein." 02 April 2002. 02 Dec. 2005 <http://www.th.physik.uni-frankfurt.de/~jr/physpiceinstein.html>.