Matamoros, R., A. Ceballos, P. A. Contreras, C. Quiroga, M. Andaur, and F. Wittwer. “Serum Concentrations of Triiodothyronine, Thyroxine and Lipid Profile in Dairy Cows Fed With a Low Selenium Diet”. Archivos De Medicina Veterinaria, vol. 40, no. 1, Apr. 2008, pp. 23-29, doi:10.4067/S0301-732X2008000100003.