Citations

[1] Voelkel, James R. 1999. Johannes Kepler and the new astronomy. New York: Oxford University Press.
[2] Boyer, Carl B., and Uta C. Merzbach. 1991. A history of mathematics. New York: Wiley.
[3] Aczel, Amir D. 2001. The mystery of the aleph: mathematics, the kabbalah, and the search for infinity. New York, NY: Pocket Books.