@book{72685,
	author = {Gödel, Kurt. and Braithwaite, Richard D.},
	title = {Sobre proposiciones formalmente indecidibles de los principios mathematica y sistemas afines / },
	publisher = {Revista Teorema, },
	year = {1980.},
	series = {Cuadernos Teorema},
	address = {Valencia : }
}