@book{550617,
	author = {Roark, Raymond J. and Young, Warren C.},
	title = {Roark's formulas for stress and strain },
	publisher = {McGraw-Hill,},
	year = {c1989.},
	address = {New York :},
	edition = {6th ed.},
	note = {Originally published under title: Formulas for stress and strain.},
	url = {http://www.loc.gov/catdir/enhancements/fy0602/88009161-t.html}
}