@InProceedings{williams-katz:2012:ACL2012short,
  author    = {Williams, Jennifer  and  Katz, Graham},
  title     = {Extracting and modeling durations for habits and events from Twitter},
  booktitle = {Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers)},
  month     = {July},
  year      = {2012},
  address   = {Jeju Island, Korea},
  publisher = {Association for Computational Linguistics},
  pages     = {223--227},
  url       = {http://www.aclweb.org/anthology/P12-2044}
}