@article{Olah:2017rz,
  author = "Olah, Laszlo  and  Tanaka, Hiroyuki  and  VARGA, Dezso",
  title = "{Investigation of background sources of muography}",
  doi = "10.22323/1.301.0347",
  journal = "PoS",
  year = 2017,
  volume = "ICRC2017",
  pages = "347"
}