@article{Petrov:2017lm,
  author = "Petrov, Igor  and  Knurenko, Stanislav",
  title = "{Comparison of the relative transparency of the atmosphere measured by attenuation of Cherenkov light}",
  doi = "10.22323/1.301.0333",
  journal = "PoS",
  year = 2017,
  volume = "ICRC2017",
  pages = "333"
}