@article{learningreciprocityincomplexsequential,
  title = {Learning Reciprocity in Complex Sequential Social Dilemmas},
  author = {Tom Eccles and Edward Hughes and János Kramár and Steven Wheelwright and Joel Z. Leibo},
  year = {2019},
  eprint = {1903.08082},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1903.08082v1},
}