@InProceedings{joshi:1983:ACL,
  author    = {Aravind K. Joshi},
  title     = {FACTORING RECURSION AND DEPENDENCIES: AN ASPECT OF TREE ADJOINING GRAMMARS (TAG) AND A COMPARISON OF SOME FORMAL PROPERTIES OF TAGS, GPSGS, PLGS, AND LPGS},
  booktitle = {Proceedings of the 21st Annual Meeting of the Association for Computational Linguistics},
  month     = {June},
  year      = {1983},
  address   = {Cambridge, Massachusetts, USA},
  publisher = {Association for Computational Linguistics},
  pages     = {7--15},
  url       = {http://www.aclweb.org/anthology/P83-1002},
  doi       = {10.3115/981311.981314}
}