@inproceedings{lexicaltightnessandtextcomplexity,
  title = {Lexical Tightness and Text Complexity},
  author = {Michael Flor and Beata Beigman Klebanov and Kathleen M. Sheehan},
  year = {2013},
  booktitle = {WS 2013 6},
  url = {https://aclanthology.org/W13-1504},
}