@book{36474,
	author = {Chopra, Anil K.},
	title = {Dynamics of structures :},
	publisher = {Prentice Hall,},
	year = {c2007},
	address = {Upper Saddle River, NJ :},
	edition = {3rd ed.},
	url = {http://www.loc.gov/catdir/toc/fy0707/2007271939.html}
}