@article{2013seanevolutionainulanguagespacetime,
  title = {Evolution of the Ainu Language in Space and Time},
  author = {Sean Lee and Toshikazu Hasegawa},
  year = {2013},
  journal = {PLoS ONE},
  doi = {10.1371/journal.pone.0062243},
  language = {ain},
  url = {https://doi.org/10.1371/journal.pone.0062243}
}