@book{15829,
	author = {Timoshenko, Stephen and Young, D. H.},
	title = {Elementos de resistencia de materiales},
	publisher = {Montaner y Simón, },
	year = {1970.},
	address = {Barcelona : },
	note = {Ej.2 : 2a ed. 1975 -- Ej.3 : 2a ed. 1979 (reimpresión)}
}