@book{22618,
	author = {Dwivedy, S. K.},
	title = {Mechanical Vibrations:},
	publisher = {Indian Insitiute of Technology},
	address = {Guwahati},
	url = {http://video.snu.edu.in/index.php?id=2722&cat=Mechanical Engineering&course=Mechanical Vibrations&url=Phase1_Video/112103112/mod11lec03.mp4}
}