O'Connor, J. J., and E. F. Robertson. "Bessel Biography." MacTutor History of Mathematics. University of St. Andrews, Oct. 1997. Web. 07 Jan. 2011. <http://www-history.mcs.st-and.ac.uk/Biographies/Bessel.html>.
Soter, Steven, and Neil D. Tyson. "Friedrich Bessel and the Companion of Sirius." AMNH.com. American Museum of Natural History, 2000. Web. 6 Jan. 2011. <http://www.amnh.org/education/resources/rfl/web/essaybooks/cosmic/cs_bessel.html>.
Stetson. "Friedrich Wilhelm Bessel." Stetson.edu. Stetson University. Web. 6 Jan. 2011. <http://www2.stetson.edu/~efriedma/periodictable/html/Bk.html>.
The Worlds of David Darling. "Bessel, Friedrich Wilhelm (1784-1846)." The Internet Encyclopedia of Science. The Worlds of David Darling. Web. 05 Jan. 2011. <http://www.daviddarling.info/encyclopedia/B/Bessel.html>.
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