@inproceedings{kerz-etal-2019-understanding,
    title = "Understanding Vocabulary Growth Through An Adaptive Language Learning System",
    author = "Kerz, Elma  and
      Burgdorf, Andreas  and
      Wiechmann, Daniel  and
      Meeger, Stefan  and
      Qiao, Yu  and
      Kohlschein, Christian  and
      Meisen, Tobias",
    editor = "Alfter, David  and
      Volodina, Elena  and
      Borin, Lars  and
      Pilan, Ildik{\'o}  and
      Lange, Herbert",
    booktitle = "Proceedings of the 8th Workshop on NLP for Computer Assisted Language Learning",
    month = sep,
    year = "2019",
    address = "Turku, Finland",
    publisher = "LiU Electronic Press",
    url = "https://preview.aclanthology.org/fix-sig-urls/W19-6307/",
    pages = "65--78"
}