@book{30755,
	author = {Gakkhar, Sunita},
	title = {Mathematics II:},
	publisher = {Indian Insitiute of Technology},
	address = {Roorkee},
	url = {http://video.snu.edu.in/index.php?id=4946&cat=Basic courses(Sem 1 and 2)&course=Mathematics II&url=Phase1_Video/122107036/mod02lec04.mp4}
}