Calculating the Area of Overlaid Polygons Without Constructing the Overlay

@article{fsskn-ofmop-93,
    author = "Franklin, Wm Randolph and Sivaswami, Venkateshkumar and Sun, David and Kankanhalli, Mohan and Narayanaswami, Chandrasekhar",
    title = "Calculating the Area of Overlaid Polygons Without Constructing the Overlay",
    year = "1994",
    month = "April",
    pages = "81--89",
    journal = "Cartography and Geographic Information Systems",
    succeeds = "f-cmopa-90",
    mykey = "overlay kankanhalli chandra",
    keywords = "intersection, grids, area",
    href = "\bibhref{81-cagis94-overlay}"
}