@InProceedings{frost-hafiz-callaghan:2007:IWPT2007,
  author    = {Frost, Richard  and  Hafiz, Rahmatullah  and  Callaghan, Paul},
  title     = {Modular and Efficient Top-Down Parsing for Ambiguous Left-Recursive Grammars},
  booktitle = {Proceedings of the Tenth International Conference on Parsing Technologies},
  month     = {June},
  year      = {2007},
  address   = {Prague, Czech Republic},
  publisher = {Association for Computational Linguistics},
  pages     = {109--120},
  url       = {http://www.aclweb.org/anthology/W/W07/W07-2215}
}