@InProceedings{kondo-duh-matsumoto:2013:WMT,
  author    = {Kondo, Shuhei  and  Duh, Kevin  and  Matsumoto, Yuji},
  title     = {Hidden {Markov} Tree Model for Word Alignment},
  booktitle = {Proceedings of the Eighth Workshop on Statistical Machine Translation},
  month     = {August},
  year      = {2013},
  address   = {Sofia, Bulgaria},
  publisher = {Association for Computational Linguistics},
  pages     = {503--511},
  url       = {http://www.aclweb.org/anthology/W13-2263}
}