@inproceedings{lewis-tong-1992-text,
    title = "Text Filtering in {B/IUC}-3 and {MUC}-4",
    author = "Lewis, David D.  and
      Tong, Richard M.",
    booktitle = "{F}ourth {M}essage {U}nderstanding {C}onference ({MUC}-4): Proceedings of a Conference Held in {M}c{L}ean, {V}irginia, {J}une 16-18, 1992",
    year = "1992",
    url = "https://preview.aclanthology.org/fix-sig-urls/M92-1004/"
}