@book{30624,
	author = {Balakrishnan, V.},
	title = {Classical Physics:},
	publisher = {Indian Insitiute of Technology},
	address = {Madras},
	url = {http://video.snu.edu.in/index.php?id=4814&cat=Basic courses(Sem 1 and 2)&course=Classical Physics&url=Phase1_Video/122106027/lec04.mp4}
}