@inproceedings{johnson-rosner-1989-rich,
    title = "A rich environment for experimentation with unification grammars",
    author = "Johnson, R.  and
      Rosner, M.",
    editor = "Somers, Harold  and
      McGee Wood, Mary",
    booktitle = "Fourth Conference of the {E}uropean Chapter of the Association for Computational Linguistics",
    month = apr,
    year = "1989",
    address = "Manchester, England",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/landing_page/E89-1025/"
}