Markdown (Informal)
[Cross-document Temporal and Spatial Person Tracking System Demonstration](https://aclanthology.org/N09-5001) (Ji & Chen, NAACL 2009)
ACL
- Heng Ji and Zheng Chen. 2009. Cross-document Temporal and Spatial Person Tracking System Demonstration. In Proceedings of Human Language Technologies: The 2009 Annual Conference of the North American Chapter of the Association for Computational Linguistics, Companion Volume: Demonstration Session, pages 1–4, Boulder, Colorado. Association for Computational Linguistics.