@inproceedings{Mishev:2019Ug,
  author = "Mishev, Aleksandar  and  Usoskin, Ilya",
  title = "{Spectra of extreme GLEs derived using neutron monitor network records}",
  doi = "10.22323/1.358.1124",
  booktitle = "Proceedings of 36th International Cosmic Ray Conference {\textemdash} PoS(ICRC2019)",
  year = 2019,
  volume = "358",
  pages = "1124"
}