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Lučić, Z. Irrationality of the Square Root of 2: The Early Pythagorean Proof, Theodorus’s and Theaetetus’s Generalizations. Math Intelligencer 37, 26–32 (2015). https://doi.org/10.1007/s00283-014-9521-x
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DOI: https://doi.org/10.1007/s00283-014-9521-x