@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},
  url={https://example.com/@рус_},
}

@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},
}
