Smallest Pythagorean Quadrilateral with Integer Sides/Historical Note

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Historical Note on Smallest Pythagorean Quadrilateral with Integer Sides

David Wells reports in his Curious and Interesting Numbers, 2nd ed. of $1997$ that this result was published in Journal of Recreational Mathematics Volume $21$ no. $9$ by Hugh ApSimon, but this has not been corroborated.

It is also uncertain at this stage exactly what a Pythagorean quadrilateral actually is.


Sources