@inproceedings{och-etal-1999-improved,
    title = "Improved Alignment Models for Statistical Machine Translation",
    author = "Och, Franz Josef  and
      Tillmann, Christoph  and
      Ney, Hermann",
    booktitle = "1999 Joint {SIGDAT} Conference on Empirical Methods in Natural Language Processing and Very Large Corpora",
    year = "1999",
    url = "https://preview.aclanthology.org/ingest_wac_2008/W99-0604/"
}