"Biographies." The Chandra X-ray Observatory Center :: Gateway to the Universe of X-ray Astronomy!. N.p., n.d. Web. 19 May 2011. <http://chandra.harvard.edu/press/fl/bio.html>
Robert Kirshner - Wikipedia, the free encyclopedia."Wikipedia, the free encyclopedia. N.p., n.d. Web. 19 May 2011. <http://en.wikipedia.org/wiki/Robert_Kirshner>
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