@article{HeuerOrland2019,
  author    = {Leonie Heuer and Andreas Orland},
  title     = {Cooperation in the Prisoner's Dilemma},
  journal   = {Royal Society Open Science},
  series    = {an experimental comparison between pure and mixed strategies},
  volume    = {6},
  doi       = {10.1098/rsos.182142},
  year      = {2019},
}