@article{OPUS4-22615,
  title     = {Measurement of the production cross section of three isolated photons in \({pp}\) collisions at root \(s\)=8 TeV using the ATLAS detector},
  journal   = {Physics Letters B},
  volume    = {781},
  doi       = {10.1016/j.physletb.2018.03.057},
  year      = {2018},
}