@inproceedings{ristad-1987-revised,
    title = "Revised Generalized Phrase Structure Grammar",
    author = "Ristad, Eric Sven",
    booktitle = "25th Annual Meeting of the Association for Computational Linguistics",
    month = jul,
    year = "1987",
    address = "Stanford, California, USA",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/P87-1034/",
    doi = "10.3115/981175.981209",
    pages = "243--250"
}