@mastersthesis {44484,
	title = {Automated extraction of digital terrain models, roads and buildings using airborne Lidar data},
	volume = {Geomatrics Engineering},
	year = {2003},
	pages = {222},
	address = {University of Calgary},
	url = {http://search.proquest.com/docview/305222293},
	author = {Hu, Yong}
}
