@InProceedings{Martins2009ACL,
  author    = {Martins, A. F. T.  and  Smith, N. A. and Xing, E. P.},
  title     = {Concise Integer Linear Programming Formulations for Dependency Parsing},
  booktitle = {Proc. of ACL-IJCNLP},
  year      = {2009}
}