@article{JFP09,
  author = {Scott Owens and John Reppy and Aaron Turon},
  title = {Regular-expression Derivatives Re-examined},
  journal = {Journal of Functional Programming},
  volume = 19,
  number = {2},
  month = mar,
  year = 2009,
  pages = {173--190},
  doi = {10.1017/S0956796808007090}}