@InProceedings{ristadl:1987:ACL,
  author    = {Eric Sven Ristadl},
  title     = {REVISED GENERALIZED PHRASE STRUCTURE GRAMMAR},
  booktitle = {Proceedings of the 25th Annual Meeting of the Association for Computational Linguistics},
  month     = {July},
  year      = {1987},
  address   = {Stanford, California, USA},
  publisher = {Association for Computational Linguistics},
  pages     = {243--250},
  url       = {http://www.aclweb.org/anthology/P87-1034},
  doi       = {10.3115/981175.981209}
}