@book{44989,
	author = {Spiegel, Murray R},
	title = {Teoría y problemas de mecánica teórica :},
	publisher = {McGraw-Hill,},
	year = {1976.},
	series = {(Compendios Schaum)},
	address = {Panamá :},
	note = {Incluye índice alfabético.}
}