@InProceedings{ratnaparkhi:1998:ACLCOLING,
  author    = {Adwait Ratnaparkhi},
  title     = {Statistical Models for Unsupervised Prepositional Phrase Attachment },
  booktitle = {Proceedings of the 36th Annual Meeting of the Association for Computational Linguistics and 17th International Conference on Computational Linguistics, Volume 2},
  month     = {August},
  year      = {1998},
  address   = {Montreal, Quebec, Canada},
  publisher = {Association for Computational Linguistics},
  pages     = {1079--1085},
  url       = {http://www.aclweb.org/anthology/P98-2177},
  doi       = {10.3115/980691.980746}
}