@inproceedings{fw-posp-87,
    author = "Franklin, Wm Randolph and Wu, Peter YF",
    title = "A Polygon Overlay System in Prolog",
    booktitle = "Autocarto 8: Proceedings of the Eighth International Symposium on Computer-Assisted Cartography",
    address = "Baltimore, Maryland",
    month = "29 Mar -- 3 April",
    year = "1987",
    pages = "97--106",
    fulltext = "https://wrfranklin.org/p/45-autocarto87-overlay-prolog.pdf",
    href = "\bibhref{45-autocarto87-overlay-prolog}",
    mykey = "overlay",
    keywords = "intersection, artificial intelligence"
}