@inproceedings{kerz-etal-2021-automated,
    title = "Automated Classification of Written Proficiency Levels on the {CEFR}-Scale through Complexity Contours and {RNN}s",
    author = {Kerz, Elma  and
      Wiechmann, Daniel  and
      Qiao, Yu  and
      Tseng, Emma  and
      Str{\"o}bel, Marcus},
    editor = "Burstein, Jill  and
      Horbach, Andrea  and
      Kochmar, Ekaterina  and
      Laarmann-Quante, Ronja  and
      Leacock, Claudia  and
      Madnani, Nitin  and
      Pil{\'a}n, Ildik{\'o}  and
      Yannakoudakis, Helen  and
      Zesch, Torsten",
    booktitle = "Proceedings of the 16th Workshop on Innovative Use of NLP for Building Educational Applications",
    month = apr,
    year = "2021",
    address = "Online",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/2021.bea-1.21/",
    pages = "199--209"
}