@book{33929,
	author = {"Sen, Sandeep"},
	title = {Computational Geometry:},
	publisher = {Indian Insitiute of Technology},
	address = {Delhi},
	url = {http://video.snu.edu.in/index.php?id=7225&cat=Computer Science and  Engineering&course=Computational Geometry&url=Phase2_Video/106102011/mod01lec03.mp4}
}