@book{32389,
	author = {Mandelbrot, Benoît B. and Llosa, Josep,},
	title = {Geometría Fractal de la Naturaleza /},
	publisher = {Tusquets,},
	year = {1997.},
	series = {Libros para Pensar la Ciencia Matatemas No.49},
	address = {Barcelona :}
}