@article{Arsene:2021Db,
  author = "Arsene, Nicusor",
  title = "{Fitting fractions of the $X_{\rm max}$ distributions at ultra high energies}",
  doi = "10.22323/1.395.0193",
  journal = "PoS",
  year = 2021,
  volume = "ICRC2021",
  pages = "193"
}