@inproceedings{ahrenberg-1990-grammar,
    title = "A Grammar Combining Phrase Structure and Field Structure",
    author = "Ahrenberg, Lars",
    booktitle = "{COLING} 1990 Volume 2: Papers presented to the 13th International Conference on Computational Linguistics",
    year = "1990",
    url = "https://preview.aclanthology.org/fix-sig-urls/C90-2001/"
}