1. Guidelines for cookery and sensory evaluation of meat;AMSA,1978
2. B.O.E. (Boletı́n Oficial del Estado) (1997). Actualización del catalogo oficial de razas de ganado de España. B.O.E 21/11/97. Real Decreto 1682/1997 de 7 de Noviembre.
3. Food choice in retail environment;Beharrell;British Food Journal,1991
4. The appearance and the nutritional value of food products;Bender;Journal of Human Nutrition,1981
5. Bratzler, L. J. (1932). Measuring the tenderness of meat by means of a mechanical shear. Master of Science Thesis, Kansas State College (KA), USA.