@InProceedings{suzuki-EtAl:2009:EMNLP,
  author    = {Suzuki, Jun  and  Isozaki, Hideki  and  Carreras, Xavier  and  Collins, Michael},
  title     = {An Empirical Study of Semi-supervised Structured Conditional Models for Dependency Parsing},
  booktitle = {Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing},
  month     = {August},
  year      = {2009},
  address   = {Singapore},
  publisher = {Association for Computational Linguistics},
  pages     = {551--560},
  url       = {http://www.aclweb.org/anthology/D/D09/D09-1058}
}