@inproceedings{fs-ocamo-90-in-geom,
author = "Franklin, Wm Randolph and Sivaswami, Venkatesh",
title = "{OVERPROP} --- Calculating Areas of Map Overlay Polygons without Calculating the Overlay",
booktitle = "Canadian National Conference on Geographic Information Systems: Challenge for the 1990's",
publisher = "Canadian Institute of Surveying and Mapping",
address = "Ottawa",
pages = "1646--1654",
month = "5-8 Mar",
year = "1990",
href = "\bibhref{61-ottawa90-overlay}",
mykey = "overlay",
keywords = "intersection, area, grids"
}