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The author, Owen OShea, wishes to thank Steven L. Mitchell, editor-in-chief; Jade Zora Scibilia, senior editor; and all of their colleagues at Prometheus Books, for their expert guidance and skill in editing the contents of this book.
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. A Piece of Pi. Chap. 6 in Asimov on Numbers. New York: Bell, 1982.
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. On the Square. Chap. 15 in Recreations in the Theory of Numbers: The Queen of Mathematics Entertains. New York: Dover, 1964.
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OShea, Owen. Albrecht Drer and His Magic Square. Journal of Recreational Mathematics 35, no. 4 (2006): 28590.
. More Simplebut Little KnownMethods of Calculating Pythagorean Triples. Journal of Recreational Mathematics 37, no. 3 (2008): 18791.
. New Curiosities on the Lo Shu. Journal of Recreational Mathematics 35, no. 1 (2006): 2329.
. Simplebut Little KnownMethods of Calculating Pythagorean Triples. Journal of Recreational Mathematics 37, no. 1 (2008): 18.
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. Wonders of Numbers: Adventures in Mathematics, Mind and Meaning. New York: Oxford University Press, 2003.
. The Zen of Magic Squares, Circles and Stars. Princeton, NJ: Princeton University Press, 2002.
Plimmer, Martin, and Brian King. Beyond Coincidence: Stories of Amazing Coincidences and the Mystery and Mathematics that Lie behind Them. Cambridge, UK: Icon Books, 2004.
Posamentier, Alfred S. Pi: A Biography of the World's Most Mysterious Number. Amherst, NY: Prometheus Books, 2004.
. The Pythagorean Theorem: The Story of Its Power and Beauty. Amherst, NY: Prometheus Books, 2010.
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Rosenhouse, Jason. The Monty Hall Problem: The Remarkable Story of Math's Most Contentious Brain Teaser. New York. Oxford University Press, 2009.
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Shapiro, Stewart. Thinking about Mathematics: The Philosophy of Mathematics. New York: Oxford University Press, 2000.
Sierpinski, Waclaw.
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