@inproceedings{Kłusek-Gawenda:2017sY,
  author = "Kłusek-Gawenda, Mariola  and  Szczurek, Antoni",
  title = "{$\gamma\gamma \to \gamma \gamma$ scattering in ultrarelativistic UPC}",
  doi = "10.22323/1.314.0446",
  booktitle = "Proceedings of The European Physical Society Conference on High Energy Physics {\textemdash} PoS(EPS-HEP2017)",
  year = 2017,
  volume = "314",
  pages = "446"
}