@inproceedings{ji-chen-2009-cross,
    title = "Cross-document Temporal and Spatial Person Tracking System Demonstration",
    author = "Ji, Heng  and
      Chen, Zheng",
    editor = "Johnston, Michael  and
      Popowich, Fred",
    booktitle = "Proceedings of Human Language Technologies: The 2009 Annual Conference of the North {A}merican Chapter of the Association for Computational Linguistics, Companion Volume: Demonstration Session",
    month = jun,
    year = "2009",
    address = "Boulder, Colorado",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/iwcs-25-ingestion/N09-5001/",
    pages = "1--4"
}