@inproceedings{shen-etal-2013-language,
    title = "A Language-Independent Approach to Automatic Text Difficulty Assessment for Second-Language Learners",
    author = "Shen, Wade  and
      Williams, Jennifer  and
      Marius, Tamas  and
      Salesky, Elizabeth",
    editor = "Williams, Sandra  and
      Siddharthan, Advaith  and
      Nenkova, Ani",
    booktitle = "Proceedings of the Second Workshop on Predicting and Improving Text Readability for Target Reader Populations",
    month = aug,
    year = "2013",
    address = "Sofia, Bulgaria",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/W13-2904/",
    pages = "30--38"
}