@article{aad2019observation,
  author = {Aad, G. and Abbott, B. and Abbott, D. C. and Abdinov, O. and Ali, B. and Augsten, K. and Bergmann, B. and Havr{\'a}nek, M. and Hub{\'a}{\v{c}}ek, Z. and My{\v{s}}ka, M. and Novotn{\'y}, R. and Posp{\'i}{\v{s}}il, S. and Smolek, K. and Sopczak, A. and Vacek, V. and Vok{\'a}{\v{c}}, P. and Vrba, V. and others},
  title = {Observation of Light-by-Light Scattering in Ultraperipheral Pb plus Pb Collisions with the {ATLAS} Detector},
  journal = {Physical Review Letters},
  publisher = {American Physical Society (APS)},
  volume = {123},
  number = {5},
  pages = {052001},
  year = {2019},
  doi = {10.1103/PhysRevLett.123.052001},
  issn = {0031-9007}
}