@InProceedings{zhang-krieger:2011:IWPT,
  author    = {Zhang, Yi  and  Krieger, Hans-Ulrich},
  title     = {Large-Scale Corpus-Driven PCFG Approximation of an HPSG},
  booktitle = {Proceedings of the 12th International Conference on Parsing Technologies},
  month     = {October},
  year      = {2011},
  address   = {Dublin, Ireland},
  publisher = {Association for Computational Linguistics},
  pages     = {198--208},
  url       = {http://www.aclweb.org/anthology/W11-2923}
}