@InProceedings{sogaard:2009:NODALIDA,
  author    = {S{\o}gaard, Anders},
  title     = {Verifying context-sensitive treebanks and heuristic parses in polynomial time},
  booktitle = {Proceedings of the 17th Nordic Conference of Computational Linguistics (NODALIDA 2009)},
  month     = {May},
  year      = {2009},
  address   = {Odense, Denmark},
  publisher = {Northern European Association for Language Technology (NEALT)},
  pages     = {190--197},
  url       = {http://www.aclweb.org/anthology/W09-4627}
}