@book{143694,
	author = {Seto, William W. and Sánchez Bolivar, Guillermo.},
	title = {Teoría y problemas de vibraciones mecánicas / },
	editor = {Carvajal)},
	publisher = {McGraw-Hill, },
	year = {1970 (},
	series = {Compendios Schaum},
	address = {Panamá [etc.] : }
}