@article{Sushch:2016As,
  author = "Sushch, Iurii",
  title = "{Probing cluster environments of blazars through gamma-gamma absorption }",
  doi = "10.22323/1.236.0911",
  journal = "PoS",
  year = 2016,
  volume = "ICRC2015",
  pages = "911"
}