@inproceedings{nn-1990-preface,
    title = "PREFACE",
    booktitle = "{COLING} 1990 Volume 1: Papers presented to the 13th International Conference on Computational Linguistics",
    year = "1990",
    url = "https://preview.aclanthology.org/Add-Cong-Liu-Florida-Atlantic-University-author-id/C90-1001/"
}