@inproceedings{kiefer-krieger-2013-efficient,
    title = "An Efficient Typed Feature Structure Index: Theory and Implementation",
    author = "Kiefer, Bernd  and
      Krieger, Hans-Ulrich",
    booktitle = "Proceedings of the 13th International Conference on Parsing Technologies ({IWPT} 2013)",
    month = nov,
    year = "2013",
    address = "Nara, Japan",
    publisher = "Assocation for Computational Linguistics",
    url = "https://aclanthology.org/W13-5702",
    pages = "17--25",
}