@inproceedings{dilger-1982-tree,
    title = "Tree Directed Grammars",
    author = "Dilger, Werner",
    booktitle = "{C}oling 1982: Proceedings of the {N}inth {I}nternational {C}onference on {C}omputational {L}inguistics",
    year = "1982",
    url = "https://preview.aclanthology.org/fix-sig-urls/C82-1012/"
}