@misc{indiciae3990d9993746,
  title = {The spatial ultimatum game.},
  author = {K M Page and M A Nowak and K Sigmund},
  year = {2000},
  doi = {10.1098/rspb.2000.1266},
  url = {https://pubmed.ncbi.nlm.nih.gov/11413630/},
  note = {Source identifier: 11413630}
}