@article{amodelofgrassrootschangesinlinguistic,
  title = {A model of grassroots changes in linguistic systems},
  author = {Janet B. Pierrehumbert and Forrest Stonedahl and Robert Daland},
  year = {2014},
  eprint = {1408.1985},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1408.1985v1},
}