@inproceedings{church-gale-1989-enhanced,
    title = "Enhanced {G}ood-{T}uring and {C}at-{C}al: Two New Methods for Estimating Probabilities of {E}nglish Bigrams (abbreviated version)",
    author = "Church, Kenneth W.  and
      Gale, William A.",
    booktitle = "Speech and Natural Language: Proceedings of a Workshop Held at Cape Cod, Massachusetts, October 15-18, 1989",
    year = "1989",
    url = "https://preview.aclanthology.org/Author-page-Marten-During-lu/H89-2013/"
}