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@article{solymosi2010question,
title={On a question\relax ~of Erd\H{o}s and Ulam},
author={Solymosi, Jozsef and De Zeeuw, Frank},
archivePrefix = {arXiv},
eprint = {0806.3095},
journal={Discrete \& Computational Geometry},
volume={43},
number={2},
pages={393--401},
year={2010},
publisher={Springer},
}
@article{halbeisen2019geometric,
title={A geometric representation of integral solutions of $x^2+ xy+ y^2= m^2$},
author={Halbeisen, Lorenz and Hungerb{\"u}hler, Norbert},
journal={Quaestiones Mathematicae},
pages={1--15},
year={2019},
publisher={Taylor \& Francis},
}
@article{Kohnert2006IntegralPS,
title={Integral point sets over {$\mathbb{Z}^m_n$}},
author={Axel Kohnert and Sascha Kurz},
year={2006},
journal={Discrete Applied Mathematics},
volume={157},
pages={2105–2117},
}
@article{erdos1945integral,
title={Integral distances},
author={Erd{\H{o}}s, Paul},
doi={10.1090/S0002-9904-1945-08490-0},
journal={Bulletin of the American Mathematical Society},
volume={51},
number={12},
pages={996},
year={1945}
}
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