@inproceedings{carter-1990-efficient,
    title = "Efficient Disjunctive Unification for Bottom-Up Parsing",
    author = "Carter, David",
    booktitle = "{COLING} 1990 Volume 3: Papers presented to the 13th International Conference on Computational Linguistics",
    year = "1990",
    url = "https://aclanthology.org/C90-3013/"
}