@article{kauffmansadjacentpossibleinwordorder,
  title = {Kauffman's adjacent possible in word order evolution},
  author = {Ramon Ferrer-i-Cancho},
  year = {2015},
  eprint = {1512.05582},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1512.05582v2},
}