@inproceedings{ijcai2001p167,
  title     = {Representing Sentence Structure in Hidden Markov Models for Information Extraction},
  author    = {Ray, Soumya and Craven, Mark},
  booktitle = {Proceedings of the Seventeenth International Joint Conference on
               Artificial Intelligence, {IJCAI-01}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  pages     = {1273--1278},
  year      = {2001},
  url       = {https://ijcai.org/proceedings/2001/167},
}