@article{251,
  author = {Simon Levin and Helen Milner V and Charles Perrings},
  title = {The dynamics of political polarization.},
  year = {2021},
  journal = {Proceedings of the National Academy of Sciences of the United States of America},
  volume = {118},
  month = {12/2021},
  issn = {1091-6490},
  doi = {10.1073/pnas.2116950118},
  language = {eng},
}