@article{Mishev:20236m,
  author = "Mishev, Aleksandar  and  Hayakawa, Hisashi  and  Usoskin, Ilya  and  McCraken, Ken  and  Shea, Margareth  and  Smart, Don",
  title = "{Spectra and anisotropy during GLE \# 4 on 19 November 1949 derived using historical records}",
  doi = "10.22323/1.444.1234",
  journal = "PoS",
  year = 2023,
  volume = "ICRC2023",
  pages = "1234"
}