@inproceedings{van-halteren-etal-1998-improving,
    title = "Improving Data Driven Wordclass Tagging by System Combination",
    author = "van Halteren, Hans  and
      Zavrel, Jakub  and
      Daelemans, Walter",
    booktitle = "{COLING} 1998 Volume 1: The 17th International Conference on Computational Linguistics",
    year = "1998",
    url = "https://aclanthology.org/C98-1078/"
}