References

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Artmann, Benno. Euclid -- The Creation of Mathematics. Springer, New York, 1999.

Castellanos, Dario. "The Ubiquitous pi, I." Mathematics Magazine 61, no. 2 (1988), 67-98.

---------. "The Ubiquitous pi, II." Mathematics Magazine 61, no. 3 (1988), 148-163.

Heath, Sir Thomas Little. The Thirteen Books of Euclid's Elements.  Dover, New York, 1956.

---------, A Manual of Greek Mathematics. Clarendon, Oxford, 1931.

Katz, Victor. A History of Mathematics: an Introduction. 2nd ed. Addison Wesley Longman, Reading, MA, 1998.

Knorr, Wilbur. The Evolution of the Euclidean Elements: a Study of the Theory of Incommensurable Magnitudes. Reidel, Boston, 1975.

Mueller, Ian. Philosophy of Mathematics and Deductive Structure in Euclid's Elements. MIT, Cambridge, MA, 1981.