@article{Khachatryan:2016ydm,
  author = {Vardan Khachatryan and others},
  title = {Observation of $\Upsilon(\mathrm1S)$ pair production in proton-proton collisions at $\sqrts = $ 8 TeV},
  year = {2016},
  journal = {Submitted to: JHEP},
  language = {eng},
}