@InProceedings{pilan-volodina-johansson:2014:W14-18,
  author    = {Pil\'{a}n, Ildik\'{o}  and  Volodina, Elena  and  Johansson, Richard},
  title     = {Rule-based and machine learning approaches for second language sentence-level readability},
  booktitle = {Proceedings of the Ninth Workshop on Innovative Use of NLP for Building Educational Applications},
  month     = {June},
  year      = {2014},
  address   = {Baltimore, Maryland},
  publisher = {Association for Computational Linguistics},
  pages     = {174--184},
  url       = {http://www.aclweb.org/anthology/W14-1821}
}