@InProceedings{hildebrand-vogel:2013:WMT,
  author    = {Hildebrand, Silja  and  Vogel, Stephan},
  title     = {{MT} Quality Estimation: The {CMU} System for {WMT}'13},
  booktitle = {Proceedings of the Eighth Workshop on Statistical Machine Translation},
  month     = {August},
  year      = {2013},
  address   = {Sofia, Bulgaria},
  publisher = {Association for Computational Linguistics},
  pages     = {373--379},
  url       = {http://www.aclweb.org/anthology/W13-2246}
}