@book{56491,
	author = {Beer, Ferdinand P. and Johnston, E. Russell},
	title = {Mechanics of materials /},
	publisher = {McGraw-Hill Higher Education,},
	year = {c2006},
	address = {Boston :},
	edition = {4th ed.},
	note = {Includes index},
	url = {http://www.loc.gov/catdir/enhancements/fy0702/2004058751-t.html}
}