@article{Gaisser:2019jD,
  author = "Gaisser, Thomas  and  Soldin, Dennis  and  Fedynitch, Anatoli  and  Crossman, Andrew",
  title = "{Precision of analytical approximations in calculations of atmospheric leptons}",
  doi = "10.22323/1.358.0893",
  journal = "PoS",
  year = 2019,
  volume = "ICRC2019",
  pages = "893"
}