Roca-Fernandez, A.I., Gonzalez-Rodriguez, A., Vazquez-Yanez, O.P., Fernandez-Casado, J.A.. “Effects of Concentrate Source (Cottonseed vs. Barley)on Milk Performance and Fatty Acids Profile of Holstein-Friesian Dairy Cows.” Iranian Journal of Applied Animal Science, vol. 1, no. 4, 2011, pp. 245-252.