@book{174160,
	author = {Piqueras, Javier. and Rojo, Juan Manuel.},
	title = {Problemas de introduccion a la fisica del estado solido},
	publisher = {Alhambra},
	year = {1980},
	series = {Vertix: textos auxiliares de clases practicas},
	address = {Madrid},
	note = {Seccion II, Fisica 10.}
}