@book{4837,
	author = {Grassmann, Winfried Karl. and Tremblay, Jean Paul.},
	title = {Matemática discreta y lógica : },
	publisher = {Prentice Hall, },
	year = {1997.},
	address = {Madrid : },
	edition = {Editor Andrés Otero.},
	note = {Incluye índice.}
}