@InProceedings{rosti-EtAl:2009:WMT,
  author    = {Rosti, Antti-Veikko  and  Zhang, Bing  and  Matsoukas, Spyros  and  Schwartz, Richard},
  title     = {Incremental Hypothesis Alignment with Flexible Matching for Building Confusion Networks: {BBN} System Description for {WMT}09 System Combination Task},
  booktitle = {Proceedings of the Fourth Workshop on Statistical Machine Translation},
  month     = {March},
  year      = {2009},
  address   = {Athens, Greece},
  publisher = {Association for Computational Linguistics},
  pages     = {61--65},
  url       = {http://www.aclweb.org/anthology/W09-0409}
}