@InProceedings{ji-chen:2009:Demonstrations,
  author    = {Ji, Heng  and  Chen, Zheng},
  title     = {Cross-document Temporal and Spatial Person Tracking System Demonstration},
  booktitle = {Proceedings of Human Language Technologies: The 2009 Annual Conference of the North American Chapter of the Association for Computational Linguistics, Companion Volume: Demonstration Session},
  month     = {June},
  year      = {2009},
  address   = {Boulder, Colorado},
  publisher = {Association for Computational Linguistics},
  pages     = {1--4},
  url       = {http://www.aclweb.org/anthology/N/N09/N09-5001}
}