@InProceedings{mowery-EtAl:2009:BioNLP,
  author    = {Mowery, Danielle  and  Harkema, Henk  and  Dowling, John  and  Lustgarten, Jonathan  and  Chapman, Wendy},
  title     = {Distinguishing Historical from Current Problems in Clinical Reports -- Which Textual Features Help?},
  booktitle = {Proceedings of the BioNLP 2009 Workshop},
  month     = {June},
  year      = {2009},
  address   = {Boulder, Colorado},
  publisher = {Association for Computational Linguistics},
  pages     = {10--18},
  url       = {http://www.aclweb.org/anthology/W/W09/W09-1302}
}