@inproceedings{della-pietra-etal-1997-fertility,
    title = "Fertility Models for Statistical Natural Language Understanding",
    author = "Della Pietra, Stephen  and
      Epstein, Mark  and
      Roukos, Salim  and
      Ward, Todd",
    booktitle = "35th Annual Meeting of the Association for Computational Linguistics and 8th Conference of the {E}uropean Chapter of the Association for Computational Linguistics",
    month = jul,
    year = "1997",
    address = "Madrid, Spain",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/P97-1022/",
    doi = "10.3115/976909.979639",
    pages = "168--173"
}