@ARTICLE{bpr14,
  author = {M. Benedikt and G. Puppis and C. Riveros},
  title = {The Per-character Cost of Repairing Word Languages},
  journal = {Theoretical Computer Science},
  year = {2014},
  volume = {539},
  pages = {38-67},
  publisher = {Elsevier Science Publishers Ltd.}
}