@InProceedings{chen-meurers:2016:BEA11,
  author    = {Chen, Xiaobin  and  Meurers, Detmar},
  title     = {Characterizing Text Difficulty with Word Frequencies},
  booktitle = {Proceedings of the 11th Workshop on Innovative Use of NLP for Building Educational Applications},
  month     = {June},
  year      = {2016},
  address   = {San Diego, CA},
  publisher = {Association for Computational Linguistics},
  pages     = {84--94},
  url       = {http://www.aclweb.org/anthology/W16-0509}
}