@article{Velinov:2017EM,
  author = "Velinov, Peter I. Y.  and  Balabin, Yury  and  Maurchev, Evgeny",
  title = "{Cosmic ray ionization effect in the atmosphere during the maximal GLE05 − on 23.02.1956}",
  doi = "10.22323/1.301.0075",
  journal = "PoS",
  year = 2017,
  volume = "ICRC2017",
  pages = "075"
}