@misc{indiciae2e5aef71745b,
  title = {Payment for labour in monkeys.},
  author = {F B de Waal and M L Berger},
  year = {2000},
  doi = {10.1038/35007138},
  url = {https://pubmed.ncbi.nlm.nih.gov/10766228/},
  note = {Source identifier: 10766228}
}