@InProceedings{shen-EtAl:2013:PITR2013,
  author    = {Shen, Wade  and  Williams, Jennifer  and  Marius, Tamas  and  Salesky, Elizabeth},
  title     = {A Language-Independent Approach to Automatic Text Difficulty Assessment for Second-Language Learners},
  booktitle = {Proceedings of the Second Workshop on Predicting and Improving Text Readability for Target Reader Populations},
  month     = {August},
  year      = {2013},
  address   = {Sofia, Bulgaria},
  publisher = {Association for Computational Linguistics},
  pages     = {30--38},
  url       = {http://www.aclweb.org/anthology/W13-2904}
}