@book{529284,
	author = {Chopra, Anil K.},
	title = {Dynamics of structures :},
	publisher = {Pearson/Prentice Hall,},
	year = {c2007.},
	address = {Upper Saddle River, N.J. :},
	edition = {3rd ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/toc/fy0707/2007271939.html}
}