@article{RaetzelWilkensMenzel2016,
  author    = {Dennis R{\"a}tzel and Martin Wilkens and Ralf Menzel},
  title     = {The effect of entanglement in gravitational photon-photon scattering},
  journal   = {epl : a letters journal exploring the frontiers of physics},
  volume    = {115},
  pages     = {S12 -- S13},
  doi       = {10.1209/0295-5075/115/51002},
  year      = {2016},
}