@InProceedings{hardmeier-nivre-tiedemann:2012:WMT,
  author    = {Hardmeier, Christian  and  Nivre, Joakim  and  Tiedemann, J\"{o}rg},
  title     = {Tree Kernels for Machine Translation Quality Estimation},
  booktitle = {Proceedings of the Seventh Workshop on Statistical Machine Translation},
  month     = {June},
  year      = {2012},
  address   = {Montr{\'e}al, Canada},
  publisher = {Association for Computational Linguistics},
  pages     = {109--113},
  url       = {http://www.aclweb.org/anthology/W12-3112}
}