@inproceedings{nagata-etal-2011-creating,
    title = "Creating a manually error-tagged and shallow-parsed learner corpus",
    author = "Nagata, Ryo  and
      Whittaker, Edward  and
      Sheinman, Vera",
    editor = "Lin, Dekang  and
      Matsumoto, Yuji  and
      Mihalcea, Rada",
    booktitle = "Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies",
    month = jun,
    year = "2011",
    address = "Portland, Oregon, USA",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/P11-1121/",
    pages = "1210--1219"
}