@inproceedings{johnson-roark-2000-compact,
    title = "Compact non-left-recursive grammars using the selective left-corner transform and factoring",
    author = "Johnson, Mark  and
      Roark, Brian",
    booktitle = "{COLING} 2000 Volume 1: The 18th International Conference on Computational Linguistics",
    year = "2000",
    url = "https://aclanthology.org/C00-1052/"
}