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\bibitem[Coxeter and Greitzer, 1967]{cox}
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\newblock {\em Geometry revisited}, volume~19 of {\em New Mathematical
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\newblock Random House, Inc., New York.

\bibitem[Gallatly, 2019]{gallatly}
Gallatly, W. (2019).
\newblock {\em The modern Geometry of the Triangle}.
\newblock Alpha Editions.

\end{thebibliography}
