@InProceedings{denero-klein:2008:ACLShort,
  author    = {DeNero, John  and  Klein, Dan},
  title     = {The Complexity of Phrase Alignment Problems},
  booktitle = {Proceedings of ACL-08: HLT, Short Papers},
  month     = {June},
  year      = {2008},
  address   = {Columbus, Ohio},
  publisher = {Association for Computational Linguistics},
  pages     = {25--28},
  url       = {http://www.aclweb.org/anthology/P/P08/P08-2007}
}