@misc{indiciaed060a488a3f5,
  title = {The evolution of cooperation.},
  author = {R Axelrod and W D Hamilton},
  year = {1981},
  doi = {10.1126/science.7466396},
  url = {https://pubmed.ncbi.nlm.nih.gov/7466396/},
  note = {Source identifier: 7466396}
}