@InProceedings{ristad:1986:ACL,
  author    = {Eric Sven Ristad},
  title     = {DEFINING NATURAL LANGUAGE GRAMMARS IN GPSG},
  booktitle = {Proceedings of the 24th Annual Meeting of the Association for Computational Linguistics},
  month     = {July},
  year      = {1986},
  address   = {New York, New York, USA},
  publisher = {Association for Computational Linguistics},
  pages     = {40--44},
  url       = {http://www.aclweb.org/anthology/P86-1007},
  doi       = {10.3115/981131.981138}
}