@inproceedings{sakai-1965-mathematical,
    title = "Some Mathematical Aspects on Syntactic Discription",
    author = "Sakai, Itiroo",
    booktitle = "COLING 1965",
    year = "1965",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/C65-1021/"
}