@InProceedings{thompson:1981:ACL,
  author    = {Henry Thompson},
  title     = {Chart Parsing and Rule Schemata in PSG},
  booktitle = {Proceedings of the 19th Annual Meeting of the Association for Computational Linguistics},
  month     = {June},
  year      = {1981},
  address   = {Stanford, California, USA},
  publisher = {Association for Computational Linguistics},
  pages     = {167--172},
  url       = {http://www.aclweb.org/anthology/P81-1036},
  doi       = {10.3115/981923.981966}
}