@book{7424,
	author = {Beer, Ferdinand. and Johnston, Jr., E. Russell.},
	title = {Mechanics of materials /},
	publisher = {McGraw-Hill Science/Engineering/Math,},
	year = {2008.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/0077221400/chopaconline-20}
}